The article deals with ceramic complex of the Early Iron Age settlement Allak 1. The authors have studied the design of corollas, ornaments, conducted technical and technological analysis and divided the complex into 2 groups. One of them relates to the Kamenskaya archaeological culture, the second to the group of ceramics of the second stage of the Novosibirsk version of the Kulaiskaya archaeological culture. The second group of ceramics is characterized by vessels with flat corollas cut inside, having small thickenings both on the outside and on the inside, decorated with elements of ornament not found on the ceramics of the Kamenskaya culture (the imprint of the corner of the spatula, etc.), making up ornamental compositions of several ornamental lines, which also have not been found on the Kamenskaya ceramics. Groups also differ by the source raw material. Finds of ceramics from the second group indicate the penetration of the Kulaiskaya culture population into the territory of the forest-steppe Altai. The obtained data supplemented the ideas about the initial settlement of the forest-steppe Altai by the Kulaiskaya culture tribes. Along with the migration wave of the population of the Sarovskii stage of the Kulaiskaya culture from the territory of the Tomsk Ob region, one can talk about quite intensive contacts with the population of the second stage of the Kulaiskaya culture of the Novosibirsk Ob region.