The Sycachi-Alyan petroglyphs are located upon the big basalt boulders along the right bank of the Amur river by the Sicachi-Alyan and Malishevo (KHabarovsk district) settlements in 70 kilometers from the Khabarovsk city. These are the disguise images (masks) of the animals, birds, snakes, boats, holes (pits with concentric circles); anthropomorphic images. In total, there had been found 300 drawings (presently only 160 are left). The images are created by the stone instrument by a deep channeled striking method and by the iron tool in a threading style technique (the drawings attributed to the Middle Age times). The graffiti belonged to the mesolithic time (early neolith), early Iron Age and early Middle Age and are dated the 12 millenniums B.C. - first half of the millennium 1 A.C.

As the local people explained us, in nanais language the word "alyan" (other "gal-boon") means "ulovo" (russian) - i.e. a deep place convenient for fishing. Herefrom the name "Gal-boo ruins" comes up, that's how the scattered stones are named.

There are six places of an allocation of the stone boulders with the images.

Yet in mesolith, roughly 10-12 thousands of the years ago, when the art of clay pottery production was still unknown in the Lower Amur, the first carvings of animals and birds had appeared on the Sycachi-Alyan stoned. These elks, horses and oxen are, most likely, the samples of the ancient, still Pleistocene fauna of the Lower Amur.

In the neolith, about 6-5 millenniums ago a culture of the fisherman and hunters was developing. A particular feature of the neolithic culture is rich developed curvilinear ornamentals: spirals, "Amur wicker-work" (a net from the interweaving curved lines). In Neolith, and maybe even earlier, the anthropomorphic drawings had appeared - masks or disguise, that can be seen on the Sycachi Alyan stones.

In ancient times there were contacts between the culture carriers of the Amur river, Ains' ancestors and tribes of Indonesia and Polynesia. A witness of such links is a wide spread of the vortex ornament, that has the Snake cult as a basis. Presumably, this was further spread out and in remote Australia and Vietnam. The culture of the Lower Amur neolithic tribes is strongly expressed in the Sycachi-Alyan rock drawings and, most likely, had the influence far bound the frontier of this region.

The petroglyphs of Lower Amur should be outlined as a particular domain amongst the all known most ancient North Asia rock drawings clusters. They differ from the other petroglyphs as by a plot (the disguise are prevailing) so by a the style, reflecting a specific artistic flair. They tend to abstraction and ornamentalism.

An ethnographic art of the contemporary Amur inhabitants still keeps such elements of petroglyphs as characteristically stylized the figures of snakes, elks, waterfowl, and at last, the disguise by themselves - the masks. Here, as in neolithic art, the vortex, applied as a main element also plays the important role.

A continuity of the ancient tradition is approved by mythology. Nani folklore relate a several legends to the rock drawings, where the the role of heroes are played by waterfowl birds - demurgs and mythic snake.

The rock Art of the Lower Amur reflects the consequent events of the historical process: the activity of early tunguses - mohaek tribes, the ancestors of boha Chzhurchzhni.