Riverlands of the Murray: NSW Pre‑European

Across the low, braided river plains and ephemeral lakes of south‑western New South Wales, human presence in the Late Holocene reads like a palimpsest of campfires, tool scatters and seasonal pathways. Archaeological data indicates that communities occupying the Barham Forest/Koondrook‑Perricoota corridor (Murray River floodplain) and the Willandra Lakes Region continued long traditions of exploiting wetlands, reedbeds and lunettes well into the centuries before European contact (roughly 400 CE to 1788 CE for the samples considered here).

Environmental shifts—changing lake levels in the Willandra basin and fluctuations in river flow along the Murray—shaped mobility, site placement and resource calendars. Material culture recovered from open camps and hearth sites points to continuity in stone tool manufacture, ochre use and complex landscape knowledge. While deep time in this region extends back tens of thousands of years, the archaeological signature for the 400–1788 CE window is one of resilient adaptation: people woven into riparian ecologies, practicing seasonal rounds that balanced hunting, fishing and plant processing.

Limited evidence suggests local groups maintained enduring place‑based identities, with trade and exchange connecting river corridors to upland zones. Because only two genetic samples accompany these archaeological contexts, any narrative that links specific genetic lineages to detailed cultural practices must remain cautious and provisional.

Two ancient mitochondrial genomes sampled from sites associated with the Australia_NSW_PreEuropean grouping—one from Barham Forest/Koondrook‑Perricoota and one from the Willandra Lakes Region—both carry mtDNA haplogroup S. Haplogroup S is recognized among Indigenous Australian maternal lineages and contributes to a picture of deep maternal continuity across the continent. Mitochondrial DNA, inherited only through mothers, provides a focused lens on maternal ancestry but does not capture the full complexity of autosomal ancestry or paternal lineages.

No Y‑chromosome haplogroups are reported for these two samples, so the paternal side remains uncharacterized here. Importantly, with a sample count of two, any population‑level inferences are preliminary. Limited evidence suggests these individuals share maternal affinities with broader Aboriginal Australian mtDNA diversity, consistent with archaeological indications of long‑term regional occupation and continuity. Ancient DNA from Willandra and other Australian sites has also shown that Indigenous Australian populations separated early from Eurasian lineages tens of thousands of years ago; the presence of haplogroup S in late Holocene samples aligns with that deep history.

Future work—larger sample sizes, high‑coverage genomes, and respectful collaboration with Indigenous communities—will be essential to test hypotheses about local continuity, migration, and kinship patterns.