![](https://images.prismic.io/avalancheca/2607e939-01fa-463b-ab5c-b75e8080923c_human+trigger.jpg?auto=compress,format)
- Credit
- Raven Eye Photography
These are avalanches triggered by a person or machine. The majority of avalanches that involve a person are triggered either by the victim or a member of their party, and 90% of fatal avalanche incidents are human-triggered. An avalanche is considered to be machine-triggered if the person triggering is on a snowmobile or other motorized vehicle.