An avalanche is a rapid flow of snow, ice, and debris down a mountainside. It typically occurs when a layer of snow becomes unstable, often due to factors like temperature changes, heavy snowfall, or human activity. Avalanches can be triggered naturally or artificially and can travel at high speeds, posing significant risks to anyone in their path. There are different types of avalanches, including slab avalanches and loose snow avalanches. Safety measures, such as avalanche beacons and proper training, are essential for those who venture into mountainous areas during winter. Understanding avalanche dynamics is crucial for preventing accidents and ensuring safety in snowy environments.