An avalanche is a natural disaster linked to snow. When there is too much snow on a mountain, some of the snow may fall, causing damage to things in its path. This is called an avalanche. People talk about avalanches because they may be dangerous to skiers and other people doing winter sports. Large avalanches may carry stones, boulders and trees with them. They may bury people under them. If the people are not found rapidly enough by rescue teams they will die of suffocation (not getting enough air) or of hypothermia (freezing cold). The chance of surviving an avalanche is as follows: 92% if found within 15 minutes 30% if found within 35 minutes (victims die of suffocation) nearly zero after two hours (victims die of injuries and hypothermia) European avalanche risk table In Europe, the avalanche risk is widely rated on the following scale, which was adopted in April 1993 to replace the earlier non-standard national schemes. Descriptions were last updated in May 2003 to enhance uniformity pdf Archived 2005-04-17 at the Wayback Machine. [1] Stability: ...