The mineral spring Tos-Bulak is situated 10 km far to the south of Kyzyl, near a highway to Erzin village. The spring is respected by local people. In summer there are always a lot of people around it. The Tuvinians stop to take water which is rich in iron. You can see herds of cows, sheep and horses not far from the spring which come here to drink water. It is forbidden to frighten away the animals as the water is given not only to people. Near the spring there is a hill on which ovaa - a sacred place to pray to gods - is situated.