What causes avalanches?

Avalanches occur when a layer of snow becomes unstable and slides downhill. This instability can be triggered by factors such as heavy snowfall, rapid temperature changes, or vibrations from earthquakes or human activity. Avalanches are more likely on steep slopes and in areas with weak snowpack layers. Once triggered, the snow gains momentum and can reach high speeds, carrying debris like rocks and trees. Avalanches are a natural hazard in mountainous regions, making prediction and prevention efforts crucial for safety.