The Atsay cemetery is located in Selenginskiy district of Buryatia, on the northern coast of the lake Gusinoye. It was discovered by an archaeological expedition in 1927 near the Atsayskiy datsan. Then, the cemetery was partially excavated by a joint archaeological squad of the Buryat Institute of Social Sciences of the BF SB USSR AS and Irkutsk State University named after Zhdanov A. A. The site dates from Bronze Age.
Konovalov P.B., Svinin V.V., Zajcev M.A. Mogil'nik Acaj II i nekotorye voprosy izucheniya plitochnyh mogil Pribajkal'ya // Po sledam drevnih kul'tur Zabajkal'ya. - Novosibirsk, 1983. - S. 85-100.