St Austell Clay Pits IPA
Location: Cornwall, north-west of St Austell, and south-east of the A30.
Grid Reference: SW 980 564
The old clay pits around St Austell comprise 3 different sites. All lie on china workings, on pits, spoil tips or vegetation-covered granite debris and were, until quite recently, mined for china clay.
This particular substrate (exposed clay waste and decaying granite rocks) supports the growth of the internationally rare liverwort, the western rushwort, Marsupella profunda, which is found in only three sites in the United Kingdom.