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It is a disaster by itself especially if is followed by other related hazards such as
lahar flow, ashfall, pyroclastic flow, ballistic projectiles, emission of volcanic
gases and lava flow.​


Sagot :

Lava (molten rock) can erupt as fire fountains or lava flows (when it is runny) or as steep-sided domes (when it is viscous). Pyroclastic flows are hot avalanches of rock, ash, and gas that travel down volcano slopes at high speeds. ... They may be very dangerous close to a volcano.