Ikh (Great) Bogd Snow capped Mountain, one of popular travel destinations of Mongolia, located in Bayankhongor aimag, is the highest peak of Govi-Altai sub range and is 3,900 meter high above sea level. There is a Salty Lake called Orog at the mountainside. Ikh Bogd sacred mountain had broken into gorge and partially collapsed by an earthquake in 1957. The gorge is 100 km long. Other notable attractions include Bichigt Khad, a world-class petro glyphic, whose rock paintings date back to the Bronze Age. The nearby Tsagaan Agui (White Cave) is believed to be the place of the earliest human inhabitance in Mongolia, with evidence of human presence dating as far back as 700,000 years ago.