Sikachi Alyan 2
The Sikachi-Alyan 2 rock art site is located on the right bank of the Amur River. It is 0.9 km west of the mouth of an unnamed stream that flows into the Amur River below the mouth of the Malyshevskaya channel. Distance from Sikachi-Alyan 1 is 1.7 km, from Sikachi-Alyan 3 – 0.5 km. Petroglyphs are observed on basalt boulders in a low floodplain, the length of the area of distribution of boulders with petroglyphs is about 180 m. Directly above the location of the petroglyphs on the high terrace of Amur River, there is an archaeological site of XI-I millennium B. C. to XI-XII centuries A. D. named Sikachi-Alyan, settlement 3. During the period of ice drifts and floods, boulders with petroglyphs are intensely affected by water and ice, move and gradually collapse.
To date, 72 boulders with petroglyphs are known within the Sikachi-Alyan 2 art-rock site. 41 boulders described by A.P. Okladnikov and A.R. Laskin are not currently observed.
Petroglyphs of Sikachi-Alyan 2 were first described by P.I. Vetlitsyn (1873) and were further explored by B. Laufer (1899), N.G. Kharlamov (1930) and A.P. Okladnikov (1935), and then by the expeditions of A.P. Okladnikov ( 1958, 1963, 1969). In the course of these studies, 57 boulders with petroglyphs were identified and described. The works of A.R. Laskin (2003) revealed 12 more boulders with petroglyphs, at the same time the design institute “Khabarovskgrazhdanproekt” drew up a topographic plan, which indicated the actual position of the boulders.
In 2017-2019, with joint efforts of the Center for Paleo-Arts of the Institute of Archeology of the Russian Academy of Sciences, the Khabarovsk Regional Heritage Preservation Center, and the RSSDA Laboratory at the site of Sikachi-Alyan 2 carried out a continuous mapping of the floodplain area with petroglyphs and documenting of all known boulders with petroglyphs (31 boulders) with the determination of their coordinates. Four boulders remain undocumented, as they during the work were below the water level of the Amur River.
Since 2017, at Sikachi-Alyan 2, annual monitoring of the movement of boulders and loose alluvium by remote methods has been carried out.