The oldest of the Sikachi-Alyan petroglyphs dated to 12000 - 9000 BC. These petroglyphs have been known to local people for many centuries; the first scientific research about these rocks was done in 1859 by Richard Maack.
Pictures of the petroglyphs (the lower group)
Petroglyphs are located on the Amur river bank downstream from the Sikachi-Alyan village. These rocks are easily accessible for viewing.
Riverbank of Amur near the lower group of petroglyphs