Petroglyphs at Baga Oigor

Hunting scene. Turkic period Institute of Archaeology, Mongolian Academy of Science
Petroglyphic Complexes of the Mongolian Altai - UNESCO World Heritage Centre
The Petroglyphic Complexes of the Mongolian Altai include three rock art sites in Bayan-Ulgii aimag: Tsagaan Salaa-Baga Oigor of Ulaankhus soum, and Upper Tsagaan Gol (Shiveet Khairkhan) and Aral Tolgoi, both of Tsengel soum. All three are located in high mountain valleys carved out by Pleistocene glaciers. These three property components include large concentrations of petroglyphs and funerary and ritual monuments reflecting the development of human culture over a period of 12,000 years. The persistent relationships between rock art, surface monuments and the larger physical context of rivers, ridges and cardinal directions create a vivid sense of the integration of human communities with the land they inhabited.

The earliest images reflect a period beginning in the Late Pleistocene and lasting through the Early Holocene (ca. 11,000 6,000 years BP), when the paleoenvironment shifted from dry to forested steppe and the valleys provided an ideal habitat for hunters of large wild game. Later images from the middle Holocene (ca. 6,000 4,000 years BP) reflect the gradual reassertion of steppe vegetation in this part of the the Altai and the early emergence of herding as the economic basis of communities. Imagery from the succeeding, Late Holocene Period, reflects the transition to horse-dependent nomadism during the Early Nomadic and Scythian periods (1st millennium BCE) and the subsequent spread of steppe empires in the later Turkic Period (7th-9th c. CE).
Source: UNESCO World Heritage Centre
Note the crenelated mane on their horses.

See also Avar? or Kirghiz? Heavy Cavalryman on a Rock Carving at Seljek, Siberia
Other 7th Century Illustrations of Costume and Soldiers