Caves of the Mendip Hills caves are listed below Caves of the Mendip Hills The caves of the Mendip Hills are formed by the particular geology of the Mendip Hills: large areas of limestone worn away by water makes it a national centre for caving. The hills conceal the largest underground river system in Britain. The hills consist of anticlines of Carboniferous Limestone lying over Devonian Old Red Sandstone, with the sandstone exposed on the summits. When a surface stream running off the sandstone reaches the limestone it sinks below ground through a "swallet", (also known locally as a "slocker"), continuing on its way down
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