is one of the natural monuments of Altai. Red Gate is a narrow, winding passage through the steep, red-colored cliffs. This natural monument got its colour because of the effusive rocks that contain cinnabar, which explains their colour. The height of the rocks is about 50 meters. The section of the road Aktash – Ulagan was built through some parts of the Red Gate. When laying the road, the narrow passage of the Red Gate was expanded.