The article deals with materials excavated from kurgan No.35 of burial & memorial Choburak-I, their introduction into the scholarly discourse and cultural & chronological interpretation. This monument includes sites of various chronological periods and lays on the right bank of the Katun River. It lays south from landa Village, Chemalsky District, the Altai Republic. The monument was researched by the archaeological expedition of the Altai State University. The above-ground structure of kurgan No. 35 is a quite large mound fringed by a crepidoma. The grave is relatively shallow and found with an intact buried body. The body lays straight on the back in the burial chamber tiled with rocks. The body heads North-West. There are few accompanying tools discovered by excavations, namely a whetstone, a bronze knife and bone arrowheads. The burial ritual is explored and analyzed. The analysis shows that the site in the focus of the research is foreign to the mountainous Altai monuments of the Early Scythian due to the range of features. Morphological features of the tools and their available equivalents indicate that kurgan No. 35 was established in the late 7th through 6th century BC. Two samples are exposed to radiocarbon analysis in different laboratories. The findings support this chronology. Based on the determined dating and layout of the site researched it can be dated back to the late Biykenskaya culture. When it comes to the cultural attribution of the site, it is necessary to refer to the debatable issues of reconstructing the history of Altai population at the turn of the early Scythian and Pazyryk periods. The existing materials analyzed allow to assume that kurgan No. 35, as well as a range of other similar burials, is associated with the new groups of people arriving from neighboring areas in the 7th century BC. The study implies the features of a few more burials of Choburak-I necropolis established in the same time. Therefore, the research assumes that the Biykenskaya culture nomads used to come in contact with the Mayemirskaya culture tribes for the Altai North-West foothills