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.

On the outskirts of the village Krępkowice lies a Teutonic Knights' boundary stone, and nearby stands a mighty pedunculate oak known as Świętopełkowy. Its age is estimated to be around 650 years, although some historians are inclined to attribute even 1100 years to it. One thing is certain – it is the oldest oak in Kashubia. Despite its relatively small circumference, about 8 meters, it stands out with very thin growth rings due to growing on dry, barren, and sandy soil. Measuring about 20 meters, the oak looks magnificent especially in late spring and summer when its crown is entirely covered with an intense and dense layer of leaves. A marked educational and nature trail leads to this oak and to the nearby Brody Lake.

This place enchants us with its tranquility and the charm of the picturesque forest landscape, offering a view of the nearby meadow. Sensory experiences are complemented by the singing of birds and the murmur of the nearby river, Zagórska Struga. It is an excellent place for picnics and relaxation in the heart of nature, equipped with a bonfire and grill, as well as a bench under a canopy and four seats outdoors. It provides comfortable conditions for twenty people. Access is possible via a well-maintained, paved road.