Cheddar Complex the Pleistocene period. Cheddar Caves contain both active and fossil systems. The active cave system is one of the most heavily studied karst systems in Britain with reference to the conduit and diffuse flow characteristics of its hydrology. Charterhouse Caves include four major swallet caves that provide an indisputable record of Pleistocene landform development in the Mendips and surrounding area. Sun Hole Cave provides a varied fauna radiocarbon-dated to the end of the Late Devensian Cold Stage. Several types of limestone including Clifton Down Limestone, Cheddar Limestone and Cheddar Oolite are visible in the Gorge and surrounding areas with pale
Wookey Hole Caves ""Ogof"" which gave the early names for this cave of ""Ochie"" ""Ochy"". "Hole" is Anglo-Saxon for cave, which is itself of Latin/Norman derivation. Therefore, the name "Wookey Hole Cave" basically means "cave cave cave". Eilert Ekwall gives an alternative derivation of "Wookey" from the Old English ""wocig"" meaning a noose or snare for animals. By the 18th century the caves were commonly known as "Okey Hole". Fossils of a range of animals have been found including the Pleistocene lion ("Felis leo spelæ"), Cave hyena ("Crocuta crocuta spelaea") and Badger ("Meles meles"). Wookey Hole was occupied by humans in the Iron