Paul Lane
Tresayes
An old quarry with important geological features
Location
Tresayes
St Austell
Know before you go
Size
1 hectare
Grazing animals
NoWalking trails
Uneven tracks and a small section of boardwalk lead to the rock face
Access
Public footpath which leads to the reserve. Terrain can be difficult, contact the Trust for disabled access information.
Dogs
Dogs permitted
When to visit
Opening times
Open at all timesBest time to visit
May to AugustAbout the reserve
This quarry is now filled with willow scrub with a stream. The primary interest of the site is its geology. Pegamites can be seen here, formed by molten magma rising from deep below the surface of the earth, forming pegmatites. These pegmatites are important as they are natural concentrators of rare elements, such as niobium, cerium and beryllium. Leftover magma formed a finer-grained granite and then a speckly grey rock, locally called 'blue elvan', which was quarried for roadstone