Mendip Hills to the development of cave diving in Britain. The first cave dive was attempted at Swildon's Hole in 1934, and the first successful dive was achieved the following year at Wookey Hole Caves, which has the deepest sump in Britain at 76 m (250 ft). The cave complexes at St. Dunstan's Well Catchment, Lamb Leer, and Priddy Caves have been identified as Sites of Special Scientific Interest. The deepest cave in the Mendip Hills is Charterhouse Cave with a vertical range of . Many caves in the Mendip area were excavated for archaeological and natural history studies by pioneer explorer
Elephanta Caves island. The Elephanta Caves is connected by ferry services from the Gateway of India, Mumbai between 9AM and 2PM daily, except Monday when the Caves are closed. Mumbai has a major domestic and international airport, as well as is connected to the Indian Railways. The island is in length with two hills that rise to a height of about . A narrow deep ravine separates the two hills, and runs from north to south. On the west, the hill rises gently from the sea and stretches east across the ravine and rises gradually to the extreme east to a height