Which of the following specialized karst landforms is defined as an extensive, closed topographic depression formed by the continuous chemical dissolution of soluble carbonate bedrock, often featuring internal drainage via a swallow hole?

💡 Solution & Explanation

An uvala is a large karst depression formed by the coalescence of multiple smaller sinkholes or dolines, creating a compound karst landform characterized by internal surface drainage and exposed limestone pavement. Alternative geomorphic features like drumlins are glacial till mounds, bajadas are coalesced alluvial fans in arid basins, and ventifacts are wind-abraded rocks. Karst topography develops extensively where massive limestone, dolomite, or gypsum strata are subjected to prolonged acidic groundwater percolation.