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
Borra Caves forts. This species has short and slender musculature with large, well developed eyes. They feed on flowers and fruits, particularly jamun, guava, silk, cotton and mango. "Habrobathynella borraensis" was described from the Borra Caves. It is the first Indian cavernicolous species of the genus "Habrobathynella". The caves are located in the Ananthagiri hills range of the Araku valley of the Visakhapatnam district in Andhra Pradesh. The caves are from Bhubaneshwar in Odisha and from Hyderabad, both via National Highway 5. The caves are well connected by road, rail and air services. The nearest international airport is Visakhapatnam Airport, from Borra