Aetna

Aitna, or Aetna was the volcanic mount known as Mount Etna (in southern Italy), and its goddess. She was an Ouros (singular of Ourea, the mountain gods), and along with her brothers and sisters they were the offspring of Gaia

By Hephaestus, she was the mother of the Palikoi (Palici), which were the gods of thermal geysers. The giant Typhoeus was burried beneath her bulk, where his restless turnings caused earthquakes and fiery lava-flows.

Mythology
Ancient writer Simonides, said that Aitna acted as arbitrator between Hephaestus and Demeter respecting the possession of Sicily.