Mount Rainier hasn't erupted in more than one
hundred years, yet ash-laden mudflows can still
run down it today.
This one, caught in action, was initiated by the
sudden release of water stored at the base of a
glacier. Outburst floods become debris flows by
picking up large quantities of ash and loose debris
as they move.
5. List at least two factors that
contribute to the formation of mudflows on volcanoes.