Glossary: Lahar
A fast-moving mudflow of unconsolidated volcanic ash, dust, breccia, and boulders mixed with rain, melting ice, or the water of a lake displaced by a lava flow.
A fast-moving mudflow of unconsolidated volcanic ash, dust, breccia, and boulders mixed with rain, melting ice, or the water of a lake displaced by a lava flow.