Karst regions are landscapes formed by the dissolution of soluble rocks, such as limestone, gypsum, or salt. This process creates unique geological features like caves, sinkholes, and underground rivers. The term "karst" originates from the Karst Plateau in Slovenia, where these formations were first studied. These areas often have distinctive ecosystems and can support diverse plant and animal life. The porous nature of the rock allows for the movement of water, which can lead to the formation of aquifers. Karst regions are important for water supply and can also be sites for recreational activities like caving and hiking.