What does 'karst topography' refer to?

Karst topography refers to a unique geological landscape formed primarily by the dissolution of soluble rocks such as limestone, gypsum, and salt. This process leads to features such as sinkholes, caves, and underground rivers. The characteristic pits and fissures are the result of the rock being eroded over time by acidic water, which dissolves the minerals in the stone. This creates a distinctive environment that is often rich in biodiversity and can provide important habitats for various organisms. In the context of a guided cave tour, understanding karst topography is crucial because it enhances the appreciation of the cave's formation processes and the accompanying geological features.