Altai Echoes: Mongolia Late Bronze Burials

Across the stony shoulders of the Altai, the Late Bronze Age Center West horizon takes shape in the archaeological record as a pattern of raised earthworks and clustered barrows. The three dated burials associated with this dataset—Khudzhirtyn gol I kurgan 2 (Khovd), Biluut 2 barrow 3 (Tsengel, Bayan-Ölgii), and Khudzhirtyn-gol-1 (Üyench District)—fall between 1259 and 917 BCE. Archaeological data indicates these interments were part of a landscape of seasonal movement and territorial markers: low-profile kurgans and isolated barrows often sited on valley margins and river terraces.

Material culture evidence from the broader region suggests continuity of pastoral lifeways in the Late Bronze Age Center West sphere, but explicit artifact links for these specific graves are limited. Radiocarbon dates place these individuals firmly in the later second and early first millennium BCE, a period when highland and valley networks connected the Mongolian Altai with neighboring steppe zones. Limited evidence suggests social display through burial architecture, yet the small sample size and uneven excavation records mean that larger regional patterns remain tentative.

The genetic dataset for Mongolia_LBA_CenterWest_5 comprises three individuals—an extremely small sample that requires conservative interpretation. Mitochondrial haplogroups are dominated by East Asian lineages (D in two individuals, C in one), while the single male Y-chromosome is assigned to haplogroup O. These lineages are common across modern and ancient East Asian and Siberian populations, and their presence here suggests maternal continuity with regional East Asian maternal gene pools during the Late Bronze Age.

Notably, the absence of clearly West Eurasian paternal or maternal markers among these three samples contrasts with contemporaneous mixed ancestries documented in other steppe pockets; however, with n = 3 this could reflect sampling bias. Archaeogenetic patterns in Mongolia are complex: other Late Bronze Age and Iron Age contexts show varying degrees of east–west admixture. For this Center West cluster, the preliminary signal points toward predominant East Asian ancestry in both maternal and paternal lines, but further sampling is required to test hypotheses about population continuity, migration, or localized admixture dynamics.