The town of Černý důl with its eponymous museum lies in the valley of the Čistá stream on the slopes of Czech largest mountain range and since its foundation in the 15th century it has been closely associated with the mining of ores, including the later discovered uranium ore, and also with the mining of limestone. Although this locality was not as important in the history of underground mining as other places in the Krkonoše Mountains, there are still several preserved, now inaccessible mine workings. The local museum has a permanent exhibition on the history of mining in the area, as well as a replica of a wooden ore crushing column, several mining carts and large blocks of Krkonoše rocks. From the museum it is possible to follow the nearby nature trails that lead from the town to the former Berghaus mountain hut, which lies in a place with several abandoned mines. Along the path stretching from the town for nearly three kilometres there are information panels on the history of mining and the sites themselves; at the end of the trail you can see the sinkhole of the former uranium mine, the mining embankment or the mouth of an abandoned medieval mine. Another nature trail shows the local tradition of limestone mining and processing and, in addition to information panels, you will also see three old lime kilns and one quarry. The Berghaus trail was created in 2007 as the first ever nature trail of this kind in the Czech Republic, and later the local museum was created, which is the result of a Czech-Polish cooperation project to promote important places in the region called the Underground of the Krkonoše Mountains.
