Australia’s Brewarrina fish traps may be the oldest human construction in the world

Australia's Brewarrina fish traps may be humanity's oldest construction, with researchers debating whether they span thousands or as many as forty thousand years. Located on the Barwon River in northern New South Wales and built by Indigenous peoples, per Global Voices, these structures spanning nearly half a kilometer are engineering marvels—dry-stone weirs and ponds strategically positioned to exploit seasonal river flows and trap migrating fish. Before colonization, the site served as a gathering place for multiple Indigenous nations, drawing up to three thousand people who came to fish, trade, and conduct ceremony. While the traps' precise age remains scientifically unverified, they stand as a remarkable example of pre-colonial agriculture and Indigenous innovation that continues to challenge how early Aboriginal societies are understood.

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