Poldice Valley, has a long history of mining related industry dating back to at least 1512. Among the many remains including walled mine shafts and chimneys are what is left of the mid 19^th century arsenic works where arsenic was condensed from gases into crystal form which was then exported across the world for use in insecticides and industrial processes, such as glass making. Notable minerals mined Galena, Pyrites, Wolfram, Arsenic & Ochre.

Location: SW 74827 42311

Harvey’s Quarry shows holes drilled into the granite rock by high pressure steam boring equipment manufactured by the world renowned Camborne company, Holmans. The drills made the job of extracting the stone a lot easier and the drills were used in mining operations throughout the world.

Location: SW 71468 40883

After the purchase of land on Carn Marth by the Protection Trust, the lower quarry was converted into an open air theatre. Despite a power failure half way through the first production held there (‘The Three Musketeers’ by the Cornwall Theatre Company), the performance was judged a tremendous success and the venue has gone from strength to strength showing drama, musicals and recitals.

Location: SW 71509 40716

The view from the top of Carn Marth is outstanding when the weather is good and there is a diorama that tells you all the points you are looking at – from the north coast of Cornwall to the south coast.

Location: SW 71681 40841