Wookey Hole Caves the water emerging from the underground caverns at Wookey Hole. The lead in the water is believed to have affected the quality of the paper produced. The designation of the water catchment area for Wookey Hole, covering a large area of the Mendip Hills as far away as Priddy Pools as a Site of Special Scientific Interest (SSSI) during the 1970s and 1980s was controversial because of conflicts of interest between land owners, recreational cavers and cave scientists. Initially proposals were put forward by the Council of Southern Caving Clubs which is part of the British Caving Association was that
Cheddar, Somerset the 2005 television programme "Seven Natural Wonders", Cheddar Gorge was named as the second greatest natural wonder in Britain, surpassed only by the Dan yr Ogof caves. There are several large and unique Sites of Special Scientific Interest (SSSI) around the village. Cheddar Reservoir is a near-circular artificial reservoir operated by Bristol Water. Dating from the 1930s, it has a capacity of 135 million gallons (614,000 cubic metres). The reservoir is supplied with water taken from the Cheddar Yeo, which rises in Gough's Cave in Cheddar Gorge and is a tributary of the River Axe. The inlet grate for the