The corrosive solution of limestone by rainwater is very high in the area fo crack, allowing the water to run into the rock. This normally forms the bowl-shaped type of dolines. The solution produces large amounts of clay (depending on the pureness of the limestone). This clay is water resistant and sometimes plugs the drainage, so little lakes of rain water can sometimes be found in dolines, a rare thing in waterless karst areas.
|Solution Dolines Gallery|