Twelve Apostles' age reveals systemic gaps in coastal geology research and climate archives

Aboriginal communities in the Gunditjmara and Boon Wurrung nations have long described the Twelve Apostles as part of a living landscape shaped by ancestral beings and seasonal fire practices, with oral histories dating back millennia. Their knowledge of coastal erosion and sediment transport predates Western geology by generations, yet remains excluded from formal climate archives. The formations are also sacred sites (*bunya*) linked to Dreamtime stories, where geological processes are imbued with spiritual significance—contrasting sharply with the 'passive archive' framing of Western science.

The Twelve Apostles’ revised age aligns with the Holocene epoch’s climatic optimum (6,000–9,000 years ago), when rising sea levels and storm surges sculpted the limestone stacks from ancient coral reefs. This period mirrors global patterns of coastal formation, such as the White Cliffs of Dover or the Ha Long Bay karsts, which also emerged from post-glacial transgressions. Colonial-era geologists initially misattributed the stacks to the Pleistocene (2.6M–11,700 years ago), reflecting a Eurocentric bias toward 'deep time' as a marker of scientific prestige.

In Japan, the *Senjojiki Rock Formation* is similarly revered as a site of ancestral spirits (*kami*) and geological dynamism, with local communities using oral traditions to predict landslides and tsunamis. Pacific Northwest Indigenous groups, like the Haida, integrate oral histories of coastal change with dendrochronology to map erosion over centuries, offering a model for collaborative geology. These systems contrast with Western science’s compartmentalization, where the Twelve Apostles are studied in isolation rather than as part of a broader cultural-ecological continuum.

The new dating (using optically stimulated luminescence and radiocarbon methods) corrects prior assumptions by accounting for the stacks’ rapid formation during the mid-Holocene, when sea levels stabilized and wave action intensified. This aligns with global evidence of limestone karst development in temperate coastal zones, though gaps remain in modeling the role of microbial biofilms and Indigenous fire practices in erosion rates. The study’s methodology underscores the need for interdisciplinary approaches that integrate Indigenous site-specific knowledge with geochemical analysis.

Artists like Sidney Nolan and Emily Kame Kngwarreye have depicted the Twelve Apostles as symbols of both fragility and resilience, merging Western landscape traditions with Aboriginal dot painting to convey their spiritual and ecological significance. In Aboriginal songlines, the stacks are 'singing stones' that 'remember' ancestral journeys, while in European Romanticism, they embody the sublime—highlighting how cultural narratives shape our perception of geological time. Spiritual traditions from both cultures frame erosion as a creative force, not merely destruction, offering a counterpoint to the doom-and-gloom narratives of climate change.

The stacks’ youth implies that coastal erosion models must incorporate millennial-scale data to predict future collapse, particularly under accelerated sea-level rise scenarios (e.g., IPCC’s SSP5-8.5). Indigenous fire management practices could reduce fuel loads and stabilize dunes, while adaptive tourism policies (e.g., visitor caps, Indigenous-led guided tours) could mitigate physical degradation. Failure to integrate these perspectives risks misallocating conservation funds toward static 'preservation' rather than dynamic 'stewardship' models.

Coastal Aboriginal communities have been sidelined in land management decisions, with their knowledge of the Twelve Apostles’ formation and sacred significance dismissed as 'anecdotal.' The Gunditjmara people’s bid for Native Title over the Twelve Apostles region (2007) was rejected, despite their documented fire and water management systems that shaped the landscape for 6,000+ years. Tourism operators and state agencies prioritize economic extraction over Indigenous co-governance, exacerbating erosion through unregulated access and infrastructure development.