Frost wedge

A Frost wedge is a natural ice formation that occurs when moisture seeps into the ground and freezes, creating a wedge-shaped ice structure. It often forms in soil or rock where water infiltrates, then expands as it freezes, exerting pressure and causing the surrounding material to fracture or shift. These wedges can be found in cold climates or during winter months and can influence the stability of slopes or terrain by breaking apart rock or soil. Essentially, they are ice-created cracks that develop due to repeated freezing and thawing cycles.