The Belogradchik Rocks are a group of bizarre sandstone and limestone rock formations, reaching up to 200 m in height. They form a strip, which is 30 km long and up to 3 km wide, and are located north of the western slopes of Stara Planina, near the town of Belogradchik in Bulgaria. The formations are a product of erosion.
The rocks were declared a natural landmark in 1949 and consist of four independent groups. Every distinct rock is named after an object it is believed to resemble and the formations vary from red through yellow to grey in colour. The Belogradchik Fortress uses the rocks as part of its defenses.
