Voices of River and Lake: NSW Before 1788

The archaeological record of pre‑European New South Wales is a landscape written in stone, shell and hearth-scars. Sites sampled for this dataset include riverine deposits at Barham Forest / Koondrook‑Perricoota (near the Murray River) and lake margins within the Willandra Lakes Region — a wide basin of ephemeral lakes and lunettes in western NSW. Radiocarbon contexts for the two genomic samples span roughly 400 CE to the eve of sustained European colonization in 1788 CE, situating them in the Late Holocene.

Archaeological data indicates persistent hunter‑gatherer lifeways adapted to river and lake ecosystems: curated stone tools, hearth features, and seasonal use of aquatic resources. Oral traditions and ethnographic records point to long continuity of custodial relationships with country; ancient DNA from human remains offers an independent line of evidence that can be compared to these cultural records.

Caveats are essential. Only two genomic samples underpin this cultural identifier, so patterns of population movement, kinship networks or demographic change remain tentative. Limited evidence suggests maternal continuity in this part of NSW through the presence of mtDNA haplogroup S in both individuals, but this must be tested with larger, ethically conducted sampling and strong collaboration with Traditional Owners.

Bulleted lines of ancestry are still being drawn: the material traces speak of deep time across rivers and lakes, while the genetic traces whisper of maternal lineages that endured into the recent past.

In the cinematic light of low lakeshores and braided river channels, communities in pre‑contact New South Wales lived in intimate relationship with water and country. Archaeological deposits at the Willandra lunette and riverine sites like Koondrook‑Perricoota preserve hearths, flaked stone, and food remains that point to seasonal fishing, waterfowl hunting, plant harvesting and mobile camps linked to resource pulses.

Material culture was optimized for mobility and locality: blades and backed artefacts hint at composite toolkits, while shell and bone fragments reflect riverine diets. Archaeological data indicates varied mortuary practices across the region; where human remains are studied, the contexts can be complex and culturally sensitive. Social organization likely emphasized small kin groups with networks of exchange, ceremony and custodial stewardship of specific places — patterns echoed in later ethnographic accounts of Aboriginal Australians of NSW.

Landscape memory and songlines structured the movement of people and materials across country. While artifacts chart day-to-day subsistence, genetic data can illuminate biological kinship across sites when sampled ethically, complementing but not replacing Indigenous knowledge systems.

The genomic signal available for this cultural label is limited: two individuals, both carrying mitochondrial haplogroup S. Haplogroup S is recognized among Aboriginal Australian maternal lineages and its presence here is consistent with archaeological continuity in New South Wales. Because mtDNA traces only the maternal line, it offers a narrow but valuable window into one strand of ancestry.

No Y‑chromosome haplogroups are reported for these samples, so paternal-line patterns remain unknown. With only two genomes, any population-level inference is preliminary: low sample counts (<10) can misrepresent diversity and obscure micro‑regional structure. Contamination, preservation biases and the uneven survival of DNA in Australian climates further complicate interpretation.

Despite these limits, the genetic data complements archaeology in useful ways. Shared mtDNA types across spatially separated sites may suggest maternal connections or long-standing local continuity; differences could indicate mobility, marriage exchange networks, or changes in demographic structure. Deep time studies of Australian ancient DNA have shown substantial continuity from Pleistocene and Holocene periods into recent centuries, but localized sampling — as in NSW — is essential to understand the finer grain of ancestry.

All genetic interpretations must be framed by ethical collaboration with Indigenous communities, who bring crucial context and consent to the study of ancestral remains.

The echoes of these two ancient genomes are not cold data but strands in living histories. Maternal continuity signaled by mtDNA S resonates with the continued connection of Aboriginal peoples to country across New South Wales. Archaeogenetic findings, when shared and interpreted in partnership with Traditional Owners, can enrich understandings of past mobility, kinship and the persistence of lineages.

Researchers emphasize that genetics cannot replace Indigenous knowledge, ceremony or custodial claims. Rather, ancient DNA provides a complementary narrative thread: it can corroborate patterns suggested by archaeology and oral histories, and highlight areas where further respectful, community‑led research is needed.

Given the tiny sample size, the primary legacy of these data is methodological and ethical: they underscore the importance of collaborative frameworks, careful sampling strategies, and returning results in ways that support community interests, cultural continuity, and repatriation where appropriate.