Wheal Grenville
During the mid-19th century, Wheal Grenville was sold several times after failing to make profit initially from copper and later from deeper tin reserves. In response to falling tin prices in the 1870s, exploration was carried out for any richer reserves and with some good fortune an area of the Great Flat Lode was discovered. By 1881 the mine was profitable and highly so by the 1890s, leading to investment in new engine houses, the remains of which can be seen today. The mine closed in 1914. The shortened chimney on the pumping engine house is due to a lightning strike in 1897.
On walks
- Carn Brea and the Great Flat Lode (5.9 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.
