Discovered in 1818 the greatest curiosities of inanimate nature in Poland. It is located 15 kilometers from Puck, in the village Mechowo on the edge of the Forest Darżlubskiej. The largest cave is about 61 meters in length. In the upper half of the corridor there is a chamber surmounted by a dome of unusual colors and shapes of formations, one of which, due to the form and color, was named as the bleeding heart.