Uploaded November 2022 | Updated September 2026, 2 weeks ago

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The deadliest thing to come out of a volcano isn't the lava - it's a pyroclastic flow. A fast moving current of hot gas, ash and rock, pyroclastic flows can move up to 700 km/h (435 mi/hr), destroying everything in its path.
Learn more about volcanoes: youtu.be/V863xR0Y2qk