Karst

From DictionGloss

Areas with shallow ground water, caverns, and sinkholes.

A distinctive landscape (topography) that can develop where the underlying bedrock, often limestone or marble, is partially dissoved by surface or ground water.

Landform formed from the weathering and dissolution of limestone, often rugged with caves and pinnacles

karst bauxite - kind of bauxite formed within depressions of karst landscapes