Researchers have made a groundbreaking discovery off Australia’s northern coast, uncovering remnants of a colossal prehistoric settlement that could reshape our understanding of ancient human migration.
In the depths off the Kimberley coast, on the northwest shelf of the submerged landmass known as Sahul, which once bridged what is now New Guinea to Australia, evidence of a bustling prehistoric community has been unearthed. Detailed in the journal Quaternary Science Reviews, the findings suggest this submerged region was a hive of human activity during the Late Pleistocene epoch, dating back up to 2.5 million years.
This expansive region, which spans an area exceeding 250,000 square miles—surpassing the size of the United Kingdom—was once misjudged as a barren wasteland. Contrary to past beliefs, it boasted a lush ecosystem replete with freshwater and saltwater bodies, alongside a vast inland sea, potentially supporting a population ranging from 50,000 to half a million individuals.
The significance of this discovery lies not just in the scale of the human settlement but also in its strategic location. It may have acted as a land bridge for ancient populations venturing into Australia, marking their transformation into some of the earliest maritime explorers.
However, this ancient land did not remain above water indefinitely. Approximately 9,000 to 12,000 years ago, the area succumbed to rising sea levels, drowning much of the shelf and consequently impacting the human settlements. Researchers suggest that as the land disappeared beneath the waves, these early humans congregated in what became an archipelago, where they laid the groundwork for maritime societies that adapted to the vast Sahul continent.
Ongoing research aims to further reconstruct the paleoecology of these submerged territories, piecing together the narrative of these early inhabitants. The study underlines the critical role submerged continental shelves played in human history, particularly in how our ancestors navigated and adapted to changing climates and landscapes.
This burgeoning field of underwater archaeology in Australia is expected to significantly contribute to the global understanding of early human dispersal and the profound effects of climate change on communities in the Late Pleistocene.