Caves of the Mendip Hills

[5] The catchment area of the Cheddar Yeo, which rises in Gough's Cave, measures 54 km2 (20.8 sq mi).

Dye marking shows that some of the water travels underground for up to 10 miles (16 km), taking up to 14 days to reach Cheddar.

[6] The earliest scientifically dated human cemetery in Britain was found at Aveline's Hole, in Burrington Combe.

[6] Many caves in the Mendip area were photographed by caver Harry Savory early in the 20th century using huge cameras, glass plates and flash powder.

[11] A number of important cave excavations and explorations were undertaken, from the 1920s onwards, by pioneer caver Herbert E. Balch.