is defined as mass wasting or movements
of rock, debris or earth down a slope. This transportation occurs for various
reasons but is often a combination of several factors; e.g.
water flow due to
heavy rainfall and snow melt, freeze and thaw cycles, increased volcanic
activity, earthquakes, fault movements and etc. Landslides that occur in
volcanic environment can vary in size from 0.1 km3 up
/volcanoes/volcanic-hazards/landslides/