Carn Marth Quarries
In 1877, four large granite quarries on Carn Marth were recorded on the 1st Edition OS map. Two of these later merged to form the lake at the top of the hill. The other two are overgrown pits at the top of the hill on the opposite side of the track from the lake. The one now converted to create the amphitheatre opened a little later in the 1880s and was worked for around 100 years until the 1980s.
On walks
- Gwennap Pit and Carn Marth (6.2 mile walk)
- Gwennap Pit to Carn Marth (short version) (2.7 mile walk)