Volcano

Volcanoes were mountains where magma or lava ejected to the surface of planetary bodies. Many planets were tectonically active resulting in volcanic activity. Planets or moons that contained volcanoes included Mustafar, Qat Chrystac, Lwhekk, Mima II, Velusia, Selvaris, Haariden, Nallastia, Sullust, Abeloth's planet, Pergitor, Upekzar, Sunspot, Zerist, Taspir III, and Eol Sha. Hoth contained volcanoes at the time of the Cold War.

On Coruscant, a volcano nearly caused the extinction of the Zhell during their war with the Taungs, as it destroyed their primary city on the planet and spit ash in the air for two standard years.

Text and facts from the “Volcano/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.