Piedmont to Steppe: North Caucasus, 2899–2303 BCE

The archaeology of the Russia_North_Caucasus assemblage unfolds along a dramatic edge where the piedmont meets the Kuban steppe. Radiocarbon-calibrated dates for the seven samples fall between 2899 and 2303 BCE, a span that situates these individuals in the Early to Middle Bronze Age horizon associated with regional groups broadly linked to the North Caucasus cultural mosaic. Sites represented include Belij Ugol 2, Gorjačevodskij 1, Lysogarskaya, Mar'inskaja 5, Progress 2, Rasshevatskij 1 (Kuban steppe), and Goryachevadskiy.

Archaeological data indicates settlement and mortuary activity on the piedmont with material traces that suggest contacts across ecological zones: upland transhumant routes, river corridors, and steppe grazing lands. Limited evidence suggests exchanges of metal, pottery styles, and burial forms with neighboring steppe communities. The cinematic image is of a landscape of wind-swept grass and folded foothills where small communities oriented to both valley agriculture and mobile herding emerged.

Caution is required: with only seven genomes, interpretations about population origins are provisional. Nonetheless, the temporal and spatial clustering of these samples provides a snapshot of a people navigating the interface between the high Caucasus and the open steppe, forming a local expression of broader North Caucasus cultural developments.

The genetic dataset for Russia_North_Caucasus comprises seven individuals—small but informative. Uniparental markers show a marked pattern: five of seven males carry Y-chromosome haplogroup R, while mitochondrial haplogroups are more diverse (U: 3, R: 2, H: 1). These results suggest a strong paternal continuity of R-lineages within this funerary sample and a varied maternal pool drawn from deep West Eurasian lineages.

Interpreting these markers requires caution. Uniparental haplogroups reflect only single ancestral lines (father-to-son or mother-to-child) and can be shaped by social practices such as patrilocal residence or male-biased migration. The predominance of Y‑R might indicate patrilineal descent groups or the success of particular male lineages during this period, but autosomal data (which integrates ancestry across all lines) is needed to assess overall population structure and admixture.

Archaeological and genetic concordance point toward interactions between steppe and Caucasus zones. The mtDNA presence of haplogroup U—an ancient European lineage—coexisting with R and H lineages underscores a blended maternal heritage. Given the sample size (<10), these patterns should be viewed as preliminary: larger genomic surveys and calibrated autosomal analyses are essential to resolve the timing and direction of gene flow, possible kin networks within cemeteries, and links to later North Caucasus populations.