Catastrophic Debris Avalanches - The Second Volcanic Hazard After Eruptions

Volcanic hazards aren't limited to eruptions, debris landslides can also cause a great deal of damage and loss of life.  Stratovolcanoes, with their steep, conical shapes made up of lava and unconsolidated mixed materials, can reach a critical point of instability when they overgrow their flanks. This leads to partial collapse, and the product of this slope failure is a large-scale, rapid mass movement known as a catastrophic landslide or debris avalanche.  read more

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