An avalanche can be caused by vibrations from an earthquake or in severe conditions loud sounds can disrupt the snow.
GLOF is where a body of water contained by a glacier melts or overflows the glacier.
Explanation:
Avalanches occur in mountainous regions with a thick snow cover while a landslide occurs in sloppy places with loose and muddy soil. ... An avalanche is the movement of large snow volumes. An avalanche can be caused by vibrations from an earthquake or in severe conditions loud sounds can disrupt the snow.
Assuming this involves another form of shifting tectonic plates, the answer would be earthquakes. Another form of the question is asking for continental drift.