periglacial-landforms

Articles

• Stone runRock landform made by myriad freeze-thaw cycles
• Frost boilSmall circular mounds of fresh soil material formed by frost action and cryoturbation
• Ice wedgeCrack in the ground formed by a narrow vertical block of ice
• ThermokarstIrregular land surface of marshy hollows and small hummocks formed when permafrost thaws