A rock glacier is a mass of rock, ice, and debris that moves slowly downhill, similar to a glacier. Rock glaciers are significant for understanding periglacial environments, the movement of ice and debris in cold climates, and the geomorphic processes shaping mountainous regions.
Source Barsch, D. (1996). “Rock Glaciers: Indicators for the Present and Former Geoecology in High Mountain Environments.” Springer.