Cheddar Gorge a tourist destination. In a 2005 poll of "Radio Times" readers, following its appearance on the 2005 television programme "Seven Natural Wonders", Cheddar Gorge was named as the second greatest natural wonder in Britain, surpassed only by Dan yr Ogof caves. The gorge attracts about 500,000 visitors per year. Cheddar is a gorge lying on the southern edge of the Mendip Hills. The maximum depth of the gorge is , with a near-vertical cliff-face to the south, and steep grassy slopes to the north. The B3135 road runs along the bottom of the gorge. The area is underlain by Black
Wookey Hole Caves river are used in a handmade paper mill, the oldest extant in Britain, which began operations circa 1610. The low, constant temperature of the caves means that they can be used for maturing Cheddar cheese. The caves are the site of the first cave dives in Britain which were undertaken by Jack Sheppard and Graham Balcombe. Since the 1930s divers have explored the extensive network of chambers developing breathing apparatus and novel techniques in the process. The full extent of the cave system is still unknown with approximately , including 25 chambers, having been explored. Part of the cave system