Crnjak

The Crnjak waterfall is located in Montenegro, in the village of Gornja Bijela, municipality of Šavnik. It is located not far from the source of the Bijela River at the place where the water flow descends from the cliff, 20 meters high. A torrent of water powered the mill. The visible remains of that mill can be found in the same place as eight centuries ago

.Source: Wikipedia