Excavations in 1864–65 and 1927–35 found human and animal remains, stone tools, pottery, amber beads, and bronze items within Thor’s Cave and the adjacent Thor’s Fissure Cavern. The caves are estimated to have contained the burial sites of at least seven people. The finds suggest the cavern was occupied from the end of the Palaeolithic period, with more intensive use during the Iron Age and Roman periods.