(1904–1915), Witch's Kitchen (the first chamber) and Hell's Ladder (1926–1927) and the Badger Hole (1938–1954), where Roman coins from the 3rd century were discovered along with Aurignacian flint implements. Rhinoceros Hole was scheduled as an ancient monument in 1992. The 1911 work found of stratification, mostly dating from the Iron Age and sealed into place by Romano-British artefacts. Finds included a silver coin of Marcia (124 BC), pottery, weapons and tools, bronze ornaments, and Roman coins from Vespasian to Valentinian II (1st to 4th centuries). The work was continued, first by E. J. Mason from 1946 to 1949, and then by G. R. Morgan in 1972. Later work led by Edgar Kingsley Tratman explored the human occupation of Rhinoceros Hole, and showed that the fourth chamber of the great cave was a Romano-British cemetery. During excavations in 1954–1957 at Hole Ground, just outside the entrance to the cave, the foundations of a 1st-century hut and Iron Age pottery were seen. These were covered by the foundations of Roman buildings, dating from the 1st to the late 4th century. Exploration The cave as far as the third chamber and side galleries has been known since at least the Iron Age period. Before the construction of a dam at the resurgence to feed water to the paper mill downstream, two more chambers (the Fourth and Fifth) were accessible. Further upstream the way lies underwater. Diving was first tried by the Cave Diving Group under the leadership of Graham Balcombe in 1935. With equipment on loan from Siebe Gorman, he and Penelope ("Mossy") Powell penetrated into the cave, reaching the seventh chamber, using standard diving dress. The events marked the first successful cave dives in Britain. Diving at Wookey resumed in early June 1946 when Balcombe used his homemade respirator and waterproof suit to explore the region between the resurgence and first chamber, as well as the underground course of the river between the third and first chambers. During these dives, the Romano-British remains were found and archaeological work dominated the early dives in the cave. The large ninth chamber was first entered on 24 April 1948 by Balcombe and Don Coase. Using this as an advance dive base, the 10th and then 11th chambers were discovered. The way on, however, was too deep for divers breathing pure oxygen from a closed-circuit rebreather. The cave claimed its first life on 9 April 1949