Coverack to Porthoustock is a coastal

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

(SSSI) in

Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

, UK, noted for both its

biological Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary in ...

and

geological Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Eart ...

characteristics. The site contains four

Red Data Book The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biologi ...

plant species.

Geography

The site, notified in 1951, is situated on the south Cornish coast, within

St Keverne St Keverne ( kw, Pluw Aghevran (parish), Lannaghevran (village)) is a civil parish and village on The Lizard in Cornwall, England, United Kingdom. In addition to the parish, an electoral ward exists called ''St Keverne and Meneage''. This stre ...

civil parish on the

Lizard Peninsula The Lizard ( kw, An Lysardh) is a peninsula in southern Cornwall, England, United Kingdom. The most southerly point of the British mainland is near Lizard Point at SW 701115; Lizard village, also known as The Lizard, is the most southerl ...

. It starts at the village of Coverack in the south, following the shores of the

English Channel The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kana ...

to the hamlet of

Porthoustock Porthoustock ( kw, Porthewstek) is a hamlet near St Keverne in Cornwall, England, United Kingdom, on the east coast of The Lizard, Lizard Peninsula. Aggregates are quarried nearby and Porthoustock beach is dominated by a large concrete stone ...

in the north.Ordnance Survey: Landranger map sheet 204 ''Truro & Falmouth'' The

South West Coast Path The South West Coast Path is England's longest waymarked long-distance footpath and a National Trail. It stretches for , running from Minehead in Somerset, along the coasts of Devon and Cornwall, to Poole Harbour in Dorset. Because it rises a ...

runs through the SSSI, part of the coastline around Lowland Point is owned by the

National Trust The National Trust, formally the National Trust for Places of Historic Interest or Natural Beauty, is a charity and membership organisation for heritage conservation in England, Wales and Northern Ireland. In Scotland, there is a separate and ...

and contains two

Geological Conservation Review The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological a ...

sites.

Wildlife and ecology

The coastline contains four

plant species,

Cornish heath ''Erica vagans'', the Cornish heath or wandering heath, is a species of flowering plant in the family Ericaceae, native to Ireland, Cornwall, western France and Spain. It is a vigorous, spreading, evergreen heather reaching tall and wide, with ...

(''Erica vagans''), dwarf rush (''

Juncus capitatus ''Juncus capitatus'' is a species of rush known by the common names dwarf rush and leafybract dwarf rush. It is native to Europe, Asia and North Africa. It is also an introduced species in parts of North America such as California and the Gulf ...

'') and twin-headed clover (''

Trifolium bocconei Clover or trefoil are common names for plants of the genus ''Trifolium'' (from Latin ''tres'' 'three' + ''folium'' 'leaf'), consisting of about 300 species of flowering plants in the legume or pea family Fabaceae originating in Europe. The gen ...

'') along with the nationally scarce autumn squill (''

Scilla autumnalis ''Prospero autumnale'', the autumn squill, an autumnal flowering plant of the family Asparagaceae, subfamily Scilloideae, is found in the Mediterranean region from Portugal and Morocco east to Turkey and the Caucasus, plus Great Britain. Despite ...

'').

History

On a

raised beach A raised beach, coastal terrace,Pinter, N (2010): 'Coastal Terraces, Sealevel, and Active Tectonics' (educational exercise), from 2/04/2011/ref> or perched coastline is a relatively flat, horizontal or gently inclined surface of marine origin,P ...

between Pedn-myin (''penn'', head and ''meyn'' stone) and Lowland Point are the 2nd-century,

Romano-British The Romano-British culture arose in Britain under the Roman Empire following the Roman conquest in AD 43 and the creation of the province of Britannia. It arose as a fusion of the imported Roman culture with that of the indigenous Britons, a ...

Trebarveth saltworks ().

Gabbro Gabbro () is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is che ...

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 (

briquetage Briquetage or very coarse pottery (VCP) is a coarse ceramic material used to make evaporation vessels and supporting pillars used in extracting salt from brine or seawater. Thick-walled saltpans were filled with saltwater and heated from below ...

) 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.

References

Sources

* * {{SSSIs Cornwall geological Sites of Special Scientific Interest in Cornwall Sites of Special Scientific Interest notified in 1951 St Keverne