What forms when rock dissolves and the area collapses?

When rock dissolves, particularly in limestone areas, it can lead to the formation of sinkholes. This occurs when the underlying material erodes and the surface layer collapses into the void created by the dissolved rock. Sinkholes can vary in size and depth, creating depressions or openings in the ground. They are common in regions characterized by karst topography, where water has significantly altered the landscape.