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
Caves of Namibia Caves of Namibia Namibia, a country in south-western Africa, has a total of 124 known caves, 41 of which are situated in the Otjozondjupa Region. In several of these caves research has been done and published in various journals, but of a variety of caves the location is not commonly known, as the information got lost over the years. Some locations are also deliberately kept secret to protect the caves. The caves known to local people were reported by early explorers and travelers. The caves of Namibia are not reported for their beauty, but for their practical and curiosity reasons.