Location: N46°12'00.0, E106°00'00.0 (Tumentsogt Mountain) Tumentsogt soum of Sukhbaatar province and Bayan Ovoo soum of Khentii province.
Distance: 250 km south from Ulaanbaatar city, 58 km northwest from Mandalgobi town.
Altitude: 1758 m above sea-level.
Baga Gazriin Stone, 15 km long and 10 km wide stone massif, is located 30 km away to the south east of Adaatsag soum centre. This stone massif also involved in Mongolian granite stone zone. The highest point is Tahilgat Mountain (1758 m) in the northwest part of the stone massif. Wild sheep, ibexes, mammals, rare rodents and birds are seen here. Surtiin Am is one of many beautiful and eye-catching places in Baga Gazriin stone massif. This is a narrow canyon with different trees, namely, asp, birch, white wicker, and elm tree, as well as min of a stone temple and site of two yurts where Buddhist monks lived and meditated since the 17th century. At that time, a small river flowed between those two yurts and the monks used to drink water of the river. Later in the 20th century, Zavaadamdin. a prominent Buddhist monk was creating his famous religious works there. A stone-wall has been built blocking entrance of the canyon. There is a 20 m long cave in 1 km from the Surtiin Am where we can walk, sit and crawl for 7 km to reach the end of the cave. Crystal stones are found around the cave. Deer were painted in a granite stone and another yurt shaped stone called Ger Chuluu, and those paintings involve an actual size of a deer body, which is one of the interesting findings for modem tourists. Therefore, there is a naturally shaped specific hole with water in the middle of the rock, which is located 1 km away to the Jargalantiin Am and local people have worshipped the natural water as spring good for human eyes. According to scientists, 64 tombs and tumuli dated back to Khunnu tribe (2200 BC) have been found around Dund Shand Am of Baga Gazriin Stone.