Erosion is the process by which natural forces like water, wind, and ice wear away rocks and soil, gradually transporting them from one location to another. This geological phenomenon plays a crucial role in shaping landscapes, influencing ecosystems, and impacting human activities such as agriculture and construction.
Lahar is a type of volcanic mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris, and water, which rapidly flows down the slopes of a volcano typically as a result of heavy rainfall or the melting of snow and ice. These flows can be extremely destructive due to their high density and speed, capable of obliterating everything in their path and causing significant geological and human impact.