Camelford Way circular walk
  1. From the car park, turn right onto Market Place, towards the main village to reach the traffic lights.

    Camelford is a market town on the edge of Bodmin Moor. Camelford gained its status as a town in 1259 after being granted its first Charter by King Henry III. In the town centre, the library was once the Town Hall; the cobbled area that it stands in used to be the market square. Camelford Town hall was erected in 1806 over the Market House, where in the early 1800s, a wife could be bought for 2-3 shillings!

    More about wife selling in Cornwall.

  2. At the traffic lights cross the road so that you are on the same side of the road as the Mason's Arms. Continue up the street until you reach the alleyway marked "Riverside walk" immediately before the Needle and Thread shop.
  3. Turn left down the alleyway marked "Riverside walk" and follow the footpath along the river to a footbridge.

    The River Camel runs for 30 miles from Bodmin Moor to Padstow Bay, making it the longest river in Cornwall after the Tamar.

    The name "Cam-El" is from the Cornish meaning "crooked one". It is documented that only the upper reaches of the river, above Boscarne, were originally known as the "Camel". The section from Boscarne to Egloshayle was known as the "Allen" and below this, it was known as "Heyl".

  4. Cross the bridge and follow the path on the other side of the river to another footbridge.

    There are a few different species of buttercup. One of most common is meadow buttercup (unsurprisingly found in meadows!) which is the tallest member of the family. Another common one is creeping buttercup which as the name suggests spreads through rhizomes so is more likely to be found in dense clumps in damp places. Its leaves are also more golden and glossy.

    Wagtails are easily recognised from the tail pumping behaviour that their name suggests. Despite being very conspicuous, the function of this curious behaviour is not well understood. It is possibly a signal to predators that the wagtail has seen them, so there's no point trying anything.

    Two of the wagtail species are easy to confuse as they are both grey and yellow.

    Grey wagtails nest close to fast-running streams as they feed on aquatic invertebrates. They have pink (skin-coloured) legs.

    Yellow wagtails are more often found in open fields and have black legs.

    The third kind of wagtail more often seen in urban environments - the pied wagtail - is easy to distinguish due to the lack of yellow: it's entirely black-and-white.

  5. Cross the bridge to return to the other side of the river and continue downriver to a pedestrian gate.

    Damselflies are predators similar to dragonflies but are easily distinguishable by the way their wings fold back parallel to the body when at rest whereas the dragonflies' wings are fixed at a right angle to the body. The Damselfly has a much smaller body than a dragonfly which means it has less stamina for flight. Nevertheless, it can hover, in a stationary position, long enough to pluck spiders from their webs.

    Kingfishers are found near slow-moving or still water where they dive to catch fish, as their name implies, but they also eat many aquatic insects, ranging from dragonfly nymphs to water beetles.

    The Kingfisher is able to switch between light receptors in the main central area of its eye and a forward-facing set when it enters water, allowing it to judge distances accurately underwater. It is estimated that a female needs to eat over twice her own body weight in order to increase her condition sufficiently for egg laying.

    The unmistakable metallic blue and orange birds fly fast and low over the surface of the water so may only be apparent as a blue flash. The pigment in their feathers is actually brown but the microstructure of their features results in light interference patterns which generate the brilliant iridescent blue and orange colours. Unfortunately the result, during Victorian times, was that kingfishers were extensively killed for display in glass cases and for use in hat making. The population has since recovered and is now limited by the availability of suitable waterways.

  6. Go through the pedestrian gate and pass a bridge. Continue downriver past the water treatment works to reach a bypassed iron kissing gate.

    Mosses' lack of deep roots mean they need to store their own supply of water during dry periods which is why they are found in shady places that are not dried-out by the sun. This also applies to moss on trees - it rarely grows on the south-facing part of the trunk which can be used as a crude form of compass when navigating.

  7. Pass around the gate to enter the meadow and follow the path to reach a wooden kissing gate.

    Greater stitchwort and lesser stitchwort both grow in similar places but they are fairly easy to tell apart. The flowers of greater stitchwort are larger (2-3cm across whereas lesser stitchwort flowers are often less than 1cm across) and the petals are rounded at the tips (lesser stitchwort petals have pointy ends). Greater stitchwort also flowers earlier in the year (from mid-March) although the flowering times of the two species do overlap in May.

    Trout are members of the Salmon family who all have an extra tiny (adipose) fin on their back towards their tail, that most other fish don't have. No-one is quite sure what the purpose is of this fin but a neural network in the fin indicates that it has some kind of sensory function.

  8. Go through the gate and follow the path to the remains of an iron kissing gate.

    Their two sets of wings beat out of phase, and the frequency, amplitude and the angles of each set of wings can be controlled. This allows dragonflies to hover in a completely stationary position for over a minute, perform extravagant aerobatic manoeuvres and even fly backwards.

    Willow trees are usually found in wet places including riverbanks and waterlogged ground. Common species include grey willow and goat willow but these often hybridise so they are more often known by the more broad-brush collective term "pussy willows" (due to their catkins). In January the fluffy, grey male catkins appear and and turn bright yellow in March when they release their pollen. Then in April, the fertilised female catkins develop into woolly seeds. In early May, air can be filled with the downy seeds that look a bit like dandelion seeds.

  9. Go through the remains of the gate and continue on the path through the meadow (the path along the riverbank rejoins it further along). Continue on the path until it ends in some steps up to a road beside an iron railing.

    The yellow water iris (also known as yellow flag) is a native plant but can become invasive and have a negative effect on biodiversity due to its ability to out-compete many other water plants. It is thought by some to be the original plant on which the "fleur-de-lis" heraldic symbol is based.

    If heavy metals are present in the soil, the plant is quite effective at absorbing these. This together with its aptitude for growing in pools of shallow water makes it potentially useful for detoxifying mine drainage.

    Common valerian is a tall, upright plant with pink flowers that likes damp ground. It can reach 5-6ft high in sheltered places but in harsher environments such as the coast it's generally 2-3ft tall. The flowers have a pleasant scent and their nectar attracts butterflies.

    Due to some very unfortunate naming, there is potential for confusion with red valerian which is both more common in Cornwall and, despite its name, is most often actually pink (although sometimes red or white). If it grows in a wall or hangs out from a verge, or has profuse flowers, or is in flower before June, it's red valerian (even if it's pink or white). If it grows in a damp place and is upright with pale pink flowers in spaced-out flattish clusters a bit like cow parsley, then you've found some not-so-common common valerian.

    Valerian root has been used for centuries in herbal remedies to promote sleep. Some scientific analysis has been done on a subset of the broad range of chemical compounds that it contains and an effect is considered plausible although there is not yet any strong clinical evidence to support this. However, the smell of valerian's essential oil is less likely to promote sleep, described as "unwashed feet" or "well-matured cheese".

    Valerian root also seems to be an attractant to cats in a similar way to catnip. Perhaps it should be called "catnap"?

    Water pepper, as the name implies, grows on wet ground such as on the margins of lakes (it's also known as marsh pepper). It's relatively late to appear, not really getting going until June.

    Another of water pepper's common names is "smartarse". As Emma Gunn points out in her foraging book "Never Mind the Burdocks", this is nothing to do with being clever: in the past, the dried leaves were added to bedding to drive away fleas etc. and the name comes from rolling over on a leaf in the wrong way.

    The species of duck that you're most likely to encounter is the mallard. Mature males have striking iridescent green heads and dark bodies whilst females look totally different - a brown and white pattern which offers much better camouflage. However, both have a common feature that is unique to mallards - an iridescent blue patch on their wings.

  10. Turn right and follow the lane uphill until you reach a set of steps on the right with an iron railing.

    Fenteroon Bridge is a very sturdy version of an ancient form of bridge known as a Clapper Bridge built out of granite slabs spanning piers in the river. The exact age is not known though it is estimated to be some time in the 17th or 18th centuries as the engineering is impressively heavyweight and this has allowed it to be adapted for use as a road bridge. The strong bridge would have allowed heavy loads to be brought from the moorland villages into Camelford for sale in the market.

  11. Climb the steps and follow the driveway ahead, marked with a public footpath sign, to reach a pair of waymarked steps on your left just past the field gate.

    In spring, the woods either side of the lane are carpeted in wild garlic

    You can make impressively green pasta with wild garlic and the garlic flavour goes well with most pasta sauces. Whizz up some wild garlic leaves with olive oil to make a thick paste (or retrieve some of this from the freezer and zap in the microwave to defrost). Whisk an egg and add roughly the same amount of your wild garlic paste as the egg. Now keep adding plain flour until you reach a stiff dough (stiffer than bread dough). Roll out fairly (but not excessively) thin keeping it coated with plenty of flour to stop it sticking. Roll it up into a Swiss roll and then cut at 1cm intervals with a sharp knife. Unroll all the strips into a floured surface first and then quickly drop them into boiling water. It will be done in just a minute or 2 (as soon as it floats) so get the strips in at the same time and have your pasta sauce made and ready to go before you cook the pasta.

    In the other direction, the lane leads up onto the edge of Bodmin Moor where streams and Crowdy Reservoir feed into the River Camel.

    In 1988 at the water treatment works at Crowdy Reservoir, aluminium sulphate (which is used in very small quantities to remove suspended particles as part of the water treatment process) was accidentally poured from a tanker into the wrong hatch. Rather than going into a storage tank it went directly into the drinking water for 20,000 - 30,000 people and resulted in Britain's worst mass poisoning incident. One the contamination was discovered, the water supply was flushed into rivers feeding into the River Camel which resulting in the deaths of 60,000 salmon and trout. Fortunately the fish population has recovered since then and the Camel river system now has very good water quality and fish stocks.

  12. Climb the steps and follow alongside the fence on the right. Near the end of the fence, when a wooden field gate and iron kissing gate come into view, head to the iron kissing gate.

    The settlement of Fenteroon is likely to date from early mediaeval times and records have been found as far back as the 13th Century. The name is from the Cornish word fenten meaning "spring". The name today would strongly suggest an overall meaning of "moorland spring" but in 1292 it was recorded as Fentenwenweht which makes this less certain. The current house is thought to date from the 19th Century and is depicted on the 1st edition OS map from the 1880s

  13. Go through the iron kissing gate and cross the field to another iron kissing gate in the top corner of the hedge ahead.

    Climate change presents some problems for bees. High summer temperatures can cause bees to overheat and become lethargic, unable to cover such a wide range to reach nectar and pollen. In spring, there is a risk that warmer temperatures could cause the hatching of bees to fall out of sync with the flowering of certain plants so that important food sources are not available when they are needed.

    Clover is a native plant and a member of the legume (pea and bean) family. It is also sown as a fodder crop and as "green manure" as it improves soil fertility. The two most common species are known simply as white clover and red clover, based on the colour of their flowers, with the latter generally being a slightly larger plant. Red clover leaves also have a white V shape.

  14. Go through the gate and follow the right hedge to the remains of an iron kissing gate.

    The Ramblers Association and National Farmers Union suggest some "dos and don'ts" for walkers which we've collated with some info from the local Countryside Access Team.

    Do

    • Stop, look and listen on entering a field. Look out for any animals and watch how they are behaving, particularly bulls or cows with calves
    • Be prepared for farm animals to react to your presence, especially if you have a dog with you.
    • Try to avoid getting between cows and their calves.
    • Move quickly and quietly, and if possible walk around the herd.
    • Keep your dog close and under effective control on a lead around cows and sheep.
    • Remember to close gates behind you when walking through fields containing livestock.
    • If you and your dog feel threatened, work your way to the field boundary and quietly make your way to safety.
    • Report any dangerous incidents to the Cornwall Council Countryside Access Team - phone 0300 1234 202 for emergencies or for non-emergencies use the iWalk Cornwall app to report a footpath issue (via the menu next to the direction on the directions screen).

    Don't

    • If you are threatened by cattle, don't hang onto your dog: let it go to allow the dog to run to safety.
    • Don't put yourself at risk. Find another way around the cattle and rejoin the footpath as soon as possible.
    • Don't panic or run. Most cattle will stop before they reach you. If they follow, just walk on quietly.
  15. Go through the remains of the kissing gate and follow the left hedge to a gateway.

    Sorrel is native to the UK and common in fields and hedgerows. It's salt tolerant so it can often be found on the coast in Cornwall. The leaves resemble small, narrow dock leaves. In summer the plant is often evident in abundance in fields by its red seeds at the top of a tall stalk.

    In common with many vegetables, sorrel contains oxalic acid. Exactly how much is a bit unclear: many articles mention "high amounts" though some published studies report a lower percentage than in spinach, parsley or rhubarb, though don't specify how easily soluble the oxalic acid is in each case. Oxalic acid is poisonous if enough is consumed and prolonged exposure can cause kidney stones. It's therefore a good idea not to eat foods high in oxalic acid every day or in very large quantities.

    The fields on the opposite side of Camel Valley are used for grazing.

    Since 1984, the European Common Market agricultural policy to restrict milk production has reduced dairy herds and prompted shifts to beef and lamb production, and arable crops such as maize and oilseed rape. Two large buyers of Cornish milk - Rodda's for their clotted cream and Dairy Crest for the production of Davidstow and Cathedral City cheeses - have helped to buffer the Cornish dairy industry from this to some degree. Post-Brexit and also in response to the risk from pandemics, there is speculation that Britain may become more agriculturally self-sufficient which could change the dynamics once again.

    The rocky hill in the distance is Roughtor.

  16. Go through the gateway and follow the left hedge to join a path which emerges onto the road.

    Camelford's parish church is roughly a mile to your left, nearly half-way between Camelford and St Teath. This is likely to have been a contributing factor to the popularity of Methodism here in the 18th and 19th Centuries. By the mid-19th Century, Camelford had three active methodist chapels.

    Methodist services were held in the cottages which was attractive to women who needed to look after young children, and in the many villages where the parish church was more than a mile away or at the top of a steep hill. This helped to make Methodism very popular in Cornwall and through the late 18th and the 19th Century, many chapels were built in the centre of the villages.

  17. Turn right and follow the pavement back into Camelford to reach a junction with Anvil Road.

    Unfortunately Victorian Methodism didn't offer much improvement in terms of romance over buying wives in the market house.

    Documented in 1865, the following was supposedly an old Cornish tradition:

    To Choose a Wife: Ascertain the date of the month of the young woman's birth, and refer to the last chapter of Proverbs in the Bible. Each verse from 1st to the 31st is supposed to indicate, either directly or indirectly, the character, and to guide the searcher - the verse corresponding with her birth date indicating the woman's character.

    However, it's probable the rural traditions involving copious amounts of ale and cider have a much longer heritage and were possibly more conducive to wedlock.

  18. Cross over the junction and continue on the pavement down the hill and past the Mason's Arms to the pedestrian crossing. Cross here and turn right to return to the car park.

    By 1327 it is thought that there were probably three mills in Camelford including the corn mill on Mill Lane. Water was brought to this via a leat which survives as a large earthwork in the park. After powering the water wheel, water from the tail race was piped underground back to the river near the bridge. The original mediaeval mill building is thought to have been rebuilt some time in the 18th or 19th Century.

    The long building opposite the car park now used for shops is reported to have had a number of uses. At one point it was the town jail. During the First World War, it was used as a cheese factory. Later during the 20th Century it was used as an army barracks and nursing home.

The blackbird is a species of thrush. The name "blackbird" is mediaeval, first recorded in 1486. Since most of the crow family is also black, plus many seabirds, the choice of this particular species for the name is thought to be due to its size. Up to the 18th Century, larger birds such as crows were referred to as "fowl" and the term "bird" was only used for smaller species.

The Old English name for the blackbird was osle and up to the 17th Century this survived as in alternative names for the blackbird ranging from ouzel to woosel. One of these is used in A Midsummer Night's Dream by Shakespeare: "The Woosell cocke, so blacke of hew, With Orenge-tawny bill".

Only male blackbirds are actually black. The females are brown. The difference in appearance between males and females is known as sexual dimorphism and is an evolutionary strategy by the males to get noticed more by females at the cost of decreased chances of survival.

Blackbirds can be found in deciduous woodland, particularly where there is dense undergrowth. In the man-made landscape, hedges provide plenty of dense undergrowth and have consequently become a really important habitat for blackbirds. Moreover, many gardens have such a high density of hedges and bushes that they are able to support ten times the blackbird population versus an equivalent area of their natural woodland habitat.

Blackbirds are one of the most common birds in the UK with a population of somewhere between 10 and 15 million. However, blackbirds were in steady decline from the 1970s through to the mid-1990s. The population has only relatively recently recovered.

Blackbirds begin singing from around the end of January but it is normally the overkeen young males initially - the older, wiser males wait until March, pacing themselves for the singing period which continues into the early summer. Blackbirds have been shown to sing more during and after rain but exactly why is not yet known.

Baby blackbirds usually leave the nest before they can actually fly then hop and scramble through the bushes. Their parents watch over them so don't attempt to rescue them.

Blackbirds in the UK are resident all year round but the blackbirds that live further north (e.g. in Norway) migrate south for the winter. To help with migration and also to avoid being eaten by predators, blackbirds can sleep half their brain at a time. This allows them to get some rest whilst still maintaining enough alertness to fly or spot predators.

The reference in the nursery rhyme "sing a song a sixpence" to "four and twenty blackbirds baked in a pie" is thought to be to the 16th Century amusement (though not for the blackbirds) of producing a large pie which included an empty chamber. After the pie had been baked and was ready to be served, a trapdoor would be cut in the empty chamber and live birds were placed inside which would fly out when the pie was cut open. Live frogs were sometimes used as an alternative.

In the Christmas carol "The Twelve Days of Christmas", the line "four colly birds" is thought to be from 18th Century slang meaning "black as coal" and was a popular nickname for the blackbird. Whilst many people today sing and write "four calling birds", this is thought to be a modern misunderstanding of what was originally written.

Some estimates suggest the UK has up to half of the world's total bluebell population; nowhere else in the world do they grow in such abundance. However, the poor bluebell faces a number of threats including climate change and hybridisation from garden plants. In the past, there has also been large-scale unsustainable removal of bulbs for sale although it is now a criminal offence to remove the bulbs of wild bluebells with a fine up to £5,000 per bulb!

During periods of cold weather, spring flowers, such as bluebells, have already started the process of growth by preparing leaves and flowers in underground bulbs during summer and autumn. They are then able to grow in the cold of winter, or early spring, by using these resources stored in their bulb. Once they have flowered, the leaves die off and the cycle begins again.

Other species (such as cow parsley or dandelions) require warm weather before they are able to germinate and grow. With the warmer springs induced by climate change, bluebells lose their "early start" advantage, and can be out-competed.

Because bluebells spread very slowly, they're considered to be an indicator of ancient woodland sites. In areas where trees are not very old, the fact there are bluebells around can indicate that there has been a wood on a site for a very long time. Even if there are no trees there at all, bluebells tell us that there was woodland there some time in the past. The bluebells along the coast are a relic of the gnarled oak woodland that used to grow here before it was cleared for grazing. There is still a patch of the ancient oak woodland left along the coast at Dizzard.

Some plant nutrients such as phosphorus tend to be more abundant near the surface of the soil where decaying organic matter collects. Bluebell seedlings start life at the surface so these are OK but as bluebell plants mature and send their roots deeper into the soil to avoid winter frosts, they have a phosphorus problem. They have solved this by partnering with a fungus that extends from their root cells, drawing in minerals from the soil in return for some carbohydrates from the plant.

Bluebells are extremely poisonous, containing a number of biologically-active compounds and were used (probably with varying success) in mediaeval medicine. The sap was used as a glue for book-binding as its toxicity repelled insects. It was also used to attach the fletchings onto arrows.

In Elizabethan times, starch made from the bulbs was used to stiffen collars and cuffs in clothing. The ruffs that were highly fashionable at the time would have needed a lot of starch to prevent them flopping. The toxins in bluebell sap might also have had the desirable property of preventing the starch encouraging the formation of mould.

In folklore, the bluebell is a symbol of constancy, presumably based on the fact that they flower in the same place every year. It was said that anyone who wears a bluebell is compelled to tell the truth. This could be the origin of the "…something blue…" that a bride should wear on her wedding day.

According to folklore, it's unlucky to bring bluebells into a house and also unlucky to walk through bluebells as it was thought that the little bells would ring and summon fairies and goblins.

In Old Cornish, both bluebells and marigolds were known as lesengoc which translates to "flower of the cuckoo". In Modern Cornish, the marigold has remained more-or-less the same but the bluebell has been changed to bleujenn an gog ("plant of the cuckoo"). The association between bluebells and cuckoos exists in Welsh ("bells of the cuckoo") and Gaelic ("cuckoo's shoe"), and in some English folk names such as Cuckoo's Boots and Cuckoo Stockings. It is thought that the association is due to the time that bluebells flower coinciding with the time that the call of the cuckoo is first heard.

Bluebells are also known by folk names based on their shape including Lady’s Nightcap and Witches’ Thimbles.

Other common names for the bluebell include "wild hyacinth" and "wood hyacinth" as they are related to the hyacinth family. Their Genus name Hyacinthoides also means "hyacinth-like".

When photographing bluebells, the flowers that look blue to your eye can end up looking purple in photos.

The first thing to check is that your camera isn't on auto white balance as the large amount of blue will cause the camera to shift the white balance towards reds to try to compensate.

Another thing to watch out for is that the camera's light metering will often over-expose the blue slightly to get a reasonable amount of red and green light and the "lost blue" can change the balance of the colours. You can get around this by deliberately under-exposing the photo (and checking there is no clipping if your camera has a histogram display) and then brightening it afterwards with editing software.

Bluebells are very vulnerable to trampling. The reason for this is that when their leaves emerge in the early part of the year, they are powered by the stored sugars in their bulbs. Sunlight is very limited at this time of the year and even more so in the shady places where they grow. In order to survive, they then need to photosynthesise flat-out to store enough starch in the bulb for next year's growth. If a bluebell’s leaves are crushed, it cannot photosynthesise and and doesn't have enough reserves left in its bulb to grow new ones. It's therefore important to stick to footpaths in bluebell woodland and best to take photos with a zoom lens from there as wandering around in the bluebells to take photos will inadvertently kill them.

A rare genetic mutation occurs in bluebells which results in about 1 bluebell in 10,000 being white rather than blue.

Three-cornered leeks - which have white bell-shaped flowers and are very common - are often misidentified as "white bluebells". The easiest way to tell them apart is that 3-cornered leeks smell strongly of onion. Their flower stems are also triangular (hence the name).

Cow parsnip (also known as "hogweed" - not to be confused with "giant hogweed") is a member of the carrot family. It has more solid leaves than cow parsley or alexanders which it often grows alongside. It also flowers later. The leaves are noticeable from around mid-April. Flowering starts roughly at the start of June and continues through the summer.

The name "hogweed" comes from the unpleasant scent of the flowers which is described as resembling a pig sty. The name "cow parsnip" is a reference to the culinary inferiority of roots compared to wild parsnip. In North America, the name "cow parsnip" is applied to a different species which is native to that continent (American cow parsnip is Heracleum maximum whereas the original English one is Heracleum spondylium).

All members of the carrot family have the potential to cause a blistering rash if touched. This caused by chemicals in the plant's sap which are made more reactive by sunlight. Cow parsnip seems to be worse for this than the other common ones such as cow parsley but nowhere near as bad as giant hogweed.

Cow parsnip can be mistaken for giant hogweed as the leaves are similar in shape and flowers look similar. The most obvious way to tell them apart is size. Cow parsnip reaches a maximum of 6-7 feet tall whereas even by the end of May, giant hogweed is massive and can reach 15ft tall by July. Another distinguishing feature is that cow parsnip has a groove in the top of the stem holding each leaf but you should not touch the plant to examine it.

You may have noticed "hogweed shoots" (which sounds mildly more appealing the "cow parsnip") being featured on Masterchef, River Cottage and other TV food programmes. However, it is not recommended for novice foragers for a couple of reasons. One is that it must be prepared carefully to remove parts of the plant that contain potential irritants. Also there's a risk of confusing it with giant hogweed or hemlock. Hemlock is very common in Cornwall and extremely poisonous - a relatively small amount can cause death.

Giant hogweed is regarded by some as the most dangerous plant in the UK (although hemlock is also a good contender). If you encounter giant hogweed, avoid touching it and children and dogs should be kept away from it as the sap contains a chemical which is extremely phototoxic. When activated by sunlight, this binds to the DNA in skin cells and kills them. Skin reaction starts as an itchy rash and can develop into third degree burns and scarring. It also makes the affected areas susceptible to severe sunburn for several years.

The plant gets its name as it can grow more than 10 feet tall, topped with white umbrella-shaped flowers. Due to the similar style of flowers, it is also known as giant cow parsley although the giant hogweed leaves are much more solid with a toothed edge, more similar to cow parsnip (normal hogweed). It is typically found near water or on waste ground.

The plant was introduced to Britain by Victorian botanists in the 19th century as an ornamental plant and has escaped from gardens into the wild. It has been spreading across the UK (as one plant produces 50,000 seeds) but is still very rare in Cornwall. A project to eradicate it along the Tamar River system is helping to stop further spread into Cornwall.

If you find giant hogweed in Cornwall (and are sure it's not normal hogweed), take a photo and report it to invasives@cormacltd.co.uk

Himalayan Balsam is a tall plant with very pretty pink flowers that can often be seen lining footpaths in the summer and early autumn. It was introduced as an ornamental species in 1839 and unfortunately the plant is now a major ecological problem. It can grow from a seed to 9ft high in a few months, forming dense thickets and wiping out other plant species. It is also extremely invasive as the seed pods open explosively, launching around 800 seeds per plant up to 7 metres and the seeds are also adapted to travel by water. It is a nuisance on riverbanks as its roots are shallow and allow the sediment to become easily eroded into the river. It can be identified by its bright pink flowers and it has a characteristic sweet smell.

The jay is a member of the crow family recognisable by the flash of electric blue on their otherwise brown body. Their natural habitat is woodland, particularly oak.

Like squirrels, jays collect and bury acorns as a winter food store. Once jays were the main means by which oaks colonised new locations as a population of 65 jays can bury (but not always find again afterwards) half a million acorns in a month. Jays prefer to bury their acorns in open ground which is an ideal spot for a new oak tree.

In 1862, a works was set up to manufacture high explosives, probably for mining or quarrying. Much of the quarrying in the immediate area is slate which high explosives are not useful for as they cause it to shatter, but it's possible that it could have found a use in the granite quarries on Bodmin Moor. The explosives being manufactured were unstable and method used to manufacture them was inherently unsafe. Consequently the enterprise ended abruptly in 1865 when the factory exploded. The location of the works is not known, due in part to the lack of remains.

A Methodist chapel was built in 1785 and replaced in 1810 with a new Wesleyan chapel building, separate Sunday School building and cemetery. During the 20th Century, the buildings were converted to private houses.

The large Gothic methodist chapel was built in 1837 which was described as "a neat building and ornament to the town".

A Tannery operated in Camelford in Victorian times. It is recorded in 1841 on the the Tithe map and in the 1880s on the OS map. The building and yard are also shown on the 2nd edition OS map in the 1900s but there is no mention of it still operating then.

In the early 14th Century a chapel was licensed in Camelford which was dedicated to St Thomas and St Mary. In the 15th Century the chapel was endowed with a chantry (like a trust fund) to pay for a priest. In the 16th Century, Henry VIII confiscated all chantries and so the building was left to go into ruin after Tudor times. It still stood as a ruin until the end of the 18th Century when it was finally demolished.

The Mason's Arms is thought to date from around 1600. Originally it consisted of just the rightmost section of the building and this was extended in sections over the next two centuries. Packet ships with post would dock at Falmouth and this would be carried along the A39 to London so this provided a stopover for coaches which the two large arches were built to accommodate and there were stables for horses at the rear of the pub.

During medieval times, barbers also performed surgery on customers. The original pole had a brass basin at the top (representing a vessel in which leeches were kept!) and bottom (representing a basin that received the blood!). The pole itself represented the staff that the patient gripped during the procedure. After the formation of the United Company of Barber Surgeons in 1540, a law was made that barbers should use a red-and-white pole and the surgeons should use a solely red pole.

When rotated, the stripes on a barber's pole create an optical illusion that the stripes are moving vertically. There is also an audio equivalent of the illusion known as a Shepard tone.