A stone run is a rock landform resulting from the erosion of particular rock varieties caused by freezing-thawing cycles in periglacial conditions during the last Ice Age.
Stone run at Mount Kent, East Falkland
Typical stone river on Vitosha Mountain, Bulgaria.
Stone runs on Weddell Island, Falkland Islands; Circum Peak and New Year Cove from Mount Weddell.
Charles Darwin a few years after his survey of the Falklands stone runs
Solifluction is a collective name for gradual processes in which a mass moves down a slope related to freeze-thaw activity. This is the standard modern meaning of solifluction, which differs from the original meaning given to it by Johan Gunnar Andersson in 1906.
Garland-like solifluction formed in the Swiss National Park
Solifluction sheets near Eagle Summit, Alaska
Solifluction lobes in Wyoming
Solifluction lobes on a slope devoid of vegetation - Nunavut, Canada