Karst caves are natural underground formations created by the dissolution of soluble rocks, such as limestone, gypsum, or salt. This process occurs over thousands of years as water, often slightly acidic, seeps into the ground and erodes the rock, forming intricate passageways and chambers. These caves are often characterized by unique features like stalactites and stalagmites, which form from mineral deposits as water drips from the cave ceiling. Karst landscapes can also include sinkholes and underground rivers, making them important for ecosystems and water supply in many regions around the world.