The Cherven Bryag Municipality is located by the right side of the Iskar River which is a right tributary of the Danube and has a length of 368 km and is the longest river that runs entirely within Bulgaria.
The Cherven Bryag Municipality is located by the right side of the Iskar River which is a right tributary of the Danube and has a length of 368 km and is the longest river that runs entirely within Bulgaria.