A volcano is an opening in a planet's crust, often formed into a mountain, from which molten lava and gases are ejected.

The study of volcanoes is volcanology.

Volcanoes on Penthara IV were activated when subterranean pockets of carbon dioxide were opened by a phaser drill. The volcanoes started to erupt and produced large plumes of volcanic dust threatening to bring another ice age on the planet. (TNG: "A Matter of Time")

Volcanic vents could supply enough heat to sustain life even on Rogue planets. An example of such world was Dakala. (ENT: "Rogue Planet")

Noted volcanoesEdit

• Kri'stak volcano
• Mount Tar'Hana

Additional referencesEdit

• VOY: "Basics, Part II"
• ENT: "Dawn"