Initiation of an avalanche from something other than the natural environment, such as by explosives or humans.

Credit: Philippe Desmazes/Agence France-Presse

Artificial triggers include avalanches released by the stress added to the snowpack from a person, or by man-made mechanisms, such as vehicles or explosives. Animals can also trigger slides.

This artificially triggered avalanche was caused by a snowcat undercutting a steep slope. Credit: Flathead Avalanche Center

Skiers and riders are artificial triggers. Credit: