Ambitle is a volcanic island which, together with Babase, another volcanic island, is one of the two Feni Islands in the Bismarck Archipelago. The island is located within the Papua New Guinea's New Ireland Province, to the east of the island of New Ireland. Ambitle is a stratovolcano, reaching 450 metres (1,480 feet) above sea level. It last erupted in about 350 BCE based on radiocarbon dating. Its caldera, 3 kilometres (2 miles) wide, contains thermal areas on its western side. Venting of hydrothermal water also occurs in coral reefs to the west of this island.