Natural Monument Bigar Stream Valley

The Bigar Stream, running along the route Knjazevac-Kalna-Pirot, is home to one of the biggest tuffaceous waterfalls in Serbia. Water cascades over two steps, reaching a height of 16 metres before bursting free in two powerful jets down to the valley of the River Stanjinska. A total of 13 water mills were erected in the Bigar Stream Valley in the late 19th century. Today only a few remain.