...e Nebrodes Mountains, which, though lower than Aetna, exceed it considerably in breadth. The whole island is hollow down beneath the ground, and full of streams and of fire, as is the case with the Tyrrhenian Sea , as far as the Cumaean country, as I have said before. At all events, the island has at many places springs of hot waters which spout up, of which those of Selinus and those of Himera are brackish,...