Volcanic eruptions happen when a volcanic vent discharges lava and gas.
Volcanoes can blast out ash, solid rocks, lava and gases that can kill people, disrupt air travel and destroy buildings:
- Flowing lava, which can reach 1,250 degrees Celsius or more, can burn everything in its path
- Boulders of hardening lava can rain down on villages
- Mud flows from rapidly melting snow can strip mountains and valleys bare and bury towns
- Ash and toxic gases can cause lung damage and disrupt air travel.