Coverack to Porthoustock


Coverack to Porthoustock is a coastal Site of Special Scientific Interest in Cornwall, England, UK, noted for both its biological and geological characteristics. The site contains four Red Data Book plant species.

Geography

The site, notified in 1951, is situated on the south Cornish coast, within St Keverne civil parish on the Lizard Peninsula. It starts at the village of Coverack in the south, following the shores of the English Channel to the hamlet of Porthoustock in the north.
The South West Coast Path runs through the SSSI, part of the coastline around Lowland Point is owned by the National Trust and contains two Geological Conservation Review sites.

Wildlife and ecology

The coastline contains four Red Data Book plant species, Cornish heath, dwarf rush and twin-headed clover along with the nationally scarce autumn squill.

History

On a raised beach between Pedn-myin and Lowland Point are the 2nd-century, Romano-British Trebarveth saltworks. Gabbro is the predominant rock here and weathers to a rough clay. Sea water was boiled in two rectangular, stone ovens within an oval building, The residue salt was packed into pots made from the gabbro clay, and course, red pottery sherds can be found in the nearby cliff. Some of the sherds still have potters' fingermarks on them. The ovens measure 150 cm by 40 cm and if packed with vessels 15 cm high, the oven would hold 50 lt of sea water. With the water containing 3% salt by weight, each operation would produce 1½ kg of salt. The saltworks are within a field system and some of the remaining walls stand up to 1 m high.