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, which vary in color from red through yellow to grey, are a product of erosion and every distinct rock is named after an object it is believed to resemble.