Debris Avalanche

A debris avalanche may be caused by collapse of the crater wall or unstable volcanic slope. The resulting avalanche may bury large tracts of land and dam streams forming lakes.  These reservoirs can cause devastation when they burst by generating lahars and floods. Debris avalanches are also known to have caused tsunamis when they cascade into lakes or the sea. ³⁸³²

Last updated at 10:51AM on February 8, 2018