Wookey Hole Caves Wookey Hole Caves Wookey Hole Caves () are a series of limestone caverns, a show cave and tourist attraction in the village of Wookey Hole on the southern edge of the Mendip Hills near Wells in Somerset, England. The River Axe flows through the cave. It is a Site of Special Scientific Interest (SSSI) for both biological and geological reasons. Wookey Hole cave is a "solutional cave", one that is formed by a process of weathering in which the natural acid in groundwater dissolves the rocks. Some water originates as rain that flows into streams on impervious rocks on the
Foulness SSSI sand-silt flats, saltmarsh, beaches, grazing marshes, rough grass and scrubland". The flats are of international importance for nine species of wildfowl and waders, such as dark-bellied brent geese. Rare plants include soft hornwort and spiral tasselwood, and the site is also important for invertebrates, with 71 nationally rare species. Foulness SSSI Foulness SSSI is a 10,702 hectare biological Site of Special Scientific Interest covering the shoreline between Southend-on-Sea and the Crouch estuary in Essex. It is a key site in "A Nature Conservation Review", and is part of the Essex Estuaries Special Area of Conservation. It covers two Ramsar wetland