Kamenný rybník, Nature reserve in Bolevec, Czech Republic

Kamenný rybník is a 5.2-hectare pond in the Bolevec pond system, oval in shape with two small bays on the north side and about 380 m long by 190 m wide. Its water is brown from peat leaching, and numerous sandstone outcrops around the shore gave the pond its name.

This pond originated from medieval fish-farming systems and became protected in the mid-20th century. A major restoration effort cleaned sediment from the water and improved conditions throughout the site.

The name Kamenný rybník, meaning "Stone Pond", comes from the numerous sandstone outcrops visible around the water. The pond is also called Kameňák. The sandstone gave the pond its name, not any stone structures.

Walking is possible year-round, though wet conditions are common especially in spring and autumn. Good footwear helps navigate the damp ground safely.

The pond's water is brown from peat leaching and resembles Finnish lake water; the sandstone outcrops around it gave the pond its name. A memorial near the west edge marks where merchant Karel Klotz shot his last hare on 25 October 1877, aged 81.