Lukurmata Voices: Tiwanaku on the Altiplano

Lukurmata sits on the windswept Bolivian altiplano, within the wider Tiwanaku sphere that reshaped the southern Lake Titicaca basin. Archaeological strata at Lukurmata reveal domestic compounds, finely made Tiwanaku-style ceramics, and agricultural terraces that hint at a community steeped in intensive highland farming. Radiocarbon-dated materials and associated artifacts place occupations that overlap the Tiwanaku Middle Horizon and later post-collapse centuries.

Archaeological data indicates Lukurmata participated in the ritual and economic networks centered on Tiwanaku city (near modern-day Tiwanaku, Bolivia). Stone architecture and pottery styles show cultural connections across decades, while botanical and faunal remains speak to a diet anchored in quinoa, potatoes, and camelid herding. Limited evidence suggests episodes of reorganization and continuity through periods of regional change.

Genetic sampling from Lukurmata spans 211–1620 CE and is temporally broad; this range encompasses pre- and post-Tiwanaku social landscapes. With only four ancient DNA samples, interpretations about population origins remain preliminary. Nonetheless, the convergence of material culture and genetic signals supports a picture of long-term local residence and interaction within the Andean highlands.

Four ancient DNA samples from Lukurmata (dates range 211–1620 CE) yield an initial snapshot of local ancestry. Uniparental markers show Y-chromosome haplogroup Q in two males and mitochondrial haplogroups B2 (three individuals) and C1b (one individual). These lineages are part of the established set of Native American founder and regional Andean maternal and paternal markers.

Haplogroup Q has deep roots across the Americas and its presence in Lukurmata aligns with widespread paternal continuity in the highlands. Maternal haplogroups B2 and C1b are common in South America and are frequently detected in ancient Andean and contemporary indigenous populations. Importantly, none of the four samples show obvious Eurasian uniparental lineages, even though the latest dates approach the colonial period.

Interpretation must be cautious. With only four genomes, statistical power is low and the temporal span is long; demographic events, mobility, and sex-biased processes could be masked. Preliminary patterns are consistent with genetic continuity between Tiwanaku-era communities and later Andean populations, but genome-wide data and larger sample sizes are needed to resolve admixture, kinship, and mobility at Lukurmata. Ancient DNA combined with isotopes and stratigraphic context offers the most robust path forward.