A circular depression in the ground made when a block of ice calves off the toe of a glacier, becomes buried by till, and later melts.

A hollow in sand and gravel where an underlying body of ice has been melted out.

Depression found in glacial deposits. Created when a piece of ice from a retreating glacier becomes embedded in soft glacial till or glacial drift deposits. Many are filled with water to form a small lake or pond.

(geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits

a geological feature formed by receding glaciers

a hollow created when buried blocks of glacier ice melt out