Petroglyphs of Tamgaly Tas – "open-air temple" with rock paintings of Tibetan iconography and inscriptions dated to the second half of the 17th century.

In 1677, Galdan created the first "iconostasis" of the figure of Bodhisattva Avalokiteshvara-Shadakshari in the image of a deity with four hands, sitting in a diamond pose on a Lotus throne.

Petroglyphs are also known for the fact that on the famous Tamgaly stone-Tash Ablai Khan and Sultan Abulfeiz, after the expulsion of the Dzungars, put a Tamga-a signature or brand confirming the ownership of the territory by the Uysun and Naiman tribes.

For about 175 years, starting from the middle of the 19th century, prayer texts and "iconostases" were studied by prominent scientists and researchers, namely: At the foot of the river on 15 separate scattered blocks are large images of Buddhist deities and Tibetan and Oirat inscriptions.

The latest prayer inscription is the longest vertical and voluminous Oirat text, which was printed in italics "clear letter" by the Volga Kalmyks, who fled in 1771 to the Ili river valley.