Extensive landscapes formed by the dissolution of limestone and other carbonate rock and characterized by pitted, bumpy surface topography, poor surface drainage, and well developed solutions channels are known as

karst topography

Explanation:

Karst topography structures in areas of abundant rainfall where bedrock consists of carbonate rocks such as gypsum, limestone, or dolomite, that easily dissolves in water. Karst topography creates sinkholes in the surface of the land, caverns, caves, and underground rivers. Jenolan Caves west of Sydney is one of the examples of Karst topography where underground holes carry large quantities of groundwater.

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