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
Ebbor Gorge by the National Trust, and managed by Natural England as a National Nature Reserve. The land was donated to the National Trust by Mrs G.W. Hodgkinson, in 1967, in memory of Winston Churchill. The site was purchased in 1931 by Wookey Hole Caves Ltd. The site is close to Wookey Hole village and caves and offers views across the Somerset Levels to Glastonbury Tor and beyond. There are three marked trails of varying lengths around the steeply wooded gorge, the longest being long, the shortest of which is suitable for wheelchair users. Because of the ecology of the area was