Gigantes

The Gigantes later attacked the gods of Mt. Olympus, rying to reach them by stacking the two mountain ranges of Thessaly, Pelion[?] and Ossa[?], on top of each other. With the help of Heracles though, the Gigantes were defeated.

Enceladus, one of the Gigantes, was placed beneath Mt. Etna. The rumbling of the volcano was caused by him rolling around. Athos, another one of the Gigantes, threw a mountain at Zeus, who knocked it to the ground near Macedonia. This mountain was the holy peak of Mount Athos.

The Gigantes were Alcyoneus ("mighty ass[?]"), Clytias, Enceladus, Echion and Athos

Ovid I, 151.