A lahar is a violent geological phenomenon characterized by a mudflow or debris flow. It consists of a slurry composed of pyroclastic material, rocky debris, and water. These flows typically originate from a volcano and move downward, often following the path of river valleys.
While there is a location named Lahar in India, it is distinct from the geological process described in scientific contexts. The term "lahar" primarily refers to the destructive volcanic flows formed by the mixture of volcanic ejecta and water.