Periglacial Head Deposits
During the last Ice Age, sea levels were lower due to all the water trapped in ice and Mounts Bay was part of the land. The ice sheets stopped at the Bristol Channel, so Cornwall was under permafrost most of the year, apart from summer days where the sun melted the frost to create a layer of surface mud. Pieces of slate within the soil were shattered when moisture within them re-froze and expanded. The small shards of stone then sank through the mud to collect in a layer on top of where the soil was still frozen.
On walks
- Perranuthnoe to Prussia Cove (3.9 mile walk)
Also mentioned in walks
- Marazion to Perranuthnoe (4.9 mile walk)
Get the iWalkCornwall app
Download the app and use it to explore the walks and to purchase a guided route.
The app will direct you to the start of the walk via satnav.
The app guides you around the walk using GPS, removing any worries about getting lost.
The walk route is described with detailed, regularly-updated, hand-written directions.
Each time there is a new direction to follow, the app will beep to remind you, and will warn you if you go off-route.
A map shows the route, where you are at all times and even which way you are facing.
Each walk is packed with information about the history and nature along the route, from over a decade of research than spans more than 3,000 topics.
Once a walk is downloaded, the app doesn't need a phone or wifi signal during the walk.
The app counts down distance to the next direction and estimates time remaining based on your personal walking speed.
We keep the directions continually updated for changes to the paths/landmarks - the price for a walk includes ongoing free updates.
