A rockfall is a type of landslide that occurs when rocks and debris break loose from a steep slope or cliff and tumble downwards. This can happen due to natural factors like weathering, erosion, or earthquakes, as well as human activities such as construction or mining. Rockfalls can vary in size, from small pebbles to large boulders, and can pose significant hazards to people and structures below. Rockfalls are commonly found in mountainous regions, where steep terrain is prevalent. They can be triggered by heavy rainfall, freeze-thaw cycles, or seismic activity. Areas prone to rockfalls often have warning signs and protective measures in place to minimize risks. Understanding the causes and behaviors of rockfalls is essential for safety in regions like the Rocky Mountains or Alps.