Wookey Hole Caves then passes through major cave systems such as Swildon's Hole, Eastwater Cavern and St Cuthbert's Swallet, around Priddy, but 95% is water that has percolated directly into the limestone. The southern slopes of the Mendip Hills largely follow the flanks of an anticline, a fold in the rock that is convex upwards and has its oldest beds at its core. On the Mendips the crest of the anticline is truncated by erosion, forming a plateau. The rock strata here dip 10–15 degrees to the southwest. The outer slopes are mainly of Carboniferous Limestone, with Devonian age Old Red Sandstone exposed
Cheddar cheese Cheddar". The cheese originates from the village of Cheddar in Somerset, south west England. Cheddar Gorge on the edge of the village contains a number of caves, which provided the ideal humidity and steady temperature for maturing the cheese. Cheddar cheese traditionally had to be made within of Wells Cathedral. Cheddar has been produced since at least the 12th century. A pipe roll of King Henry II from 1170 records the purchase of at a farthing per pound (totalling £10.13s.4d). Charles I (1600–1649) also bought cheese from the village. Romans may have brought the recipe to Britain from the Cantal