A Cave Full of Secrets
Okay, I have to admit — when I first read about this research, my jaw literally dropped. Scientists have found evidence that an Australian cave was used for ritual purposes over an incredible span of time. We're talking roughly 25,000 years of continuous spiritual practice. That's not a typo.
The cave is called Cloggs Cave, located in Gippsland, Victoria. It's situated on the traditional lands of the GunaiKurnai people, who are recognized as the traditional custodians of this region. And here's what's fascinating: the researchers didn't just stumble onto this discovery on their own. The GunaiKurnai Land and Waters Corporation actually requested the archaeological investigation. Representatives from the community were involved throughout the entire process — from designing the research to interpreting the findings to sharing them with the world. How cool is that?
The Mulla-Mullung Connection
For those of you who, like me, love a good historical mystery, this part will hook you. Nineteenth-century accounts and oral traditions describe this region as a place where powerful spiritual practitioners called "mulla-mullung" — wise women and men — carried out rituals involving magic, healing, and cursing. (I know, I know — cursing sounds dramatic, but we're talking about spiritual practices that were deeply woven into their worldview.)
The archaeological evidence now shows that Cloggs Cave was indeed a special place. But here's the question: how do you prove ritual activity from thousands of years ago when there's no written record? You look for clues that most people would completely overlook.
The Tiny Evidence That Changed Everything
Enter phytoliths.
These are microscopic silica structures that form inside plant tissues. They're basically tiny fossils of plants — and they can survive for tens of thousands of years even when the original plant has completely rotted away.
Dr. Elle Grono, a researcher at the Australian National University, explained why phytoliths are so valuable for this kind of investigation: "Unlike pollen, which is dispersed by wind or insects, phytoliths mostly accumulate at the spot where a plant decays."
Here's the crucial part — no plants grow naturally inside Cloggs Cave because it's too dark. So any phytoliths found inside the cave must have been carried there by someone or something. And the researchers were smart about their approach: they focused specifically on half-burnt phytoliths from ashy layers, because those could only have been brought in by people. Unburnt ones might have arrived via animals like possums on their fur or in their droppings. But ash? That requires human hands.
Grasses Carried In, Layer by Layer
The team excavated two pits — 1.5 meters and 2.3 meters deep — and analyzed thousands of phytoliths. What they found was extraordinary.
The Old Ancestors (as the researchers refer to the Indigenous peoples who used this cave) would collect whole grasses from outside, carry them into the cave, spread them out in thin layers, and burn them. Over thousands of years, sediment covered each burnt layer, preserving one on top of another like pages in an incredibly ancient book.
Between roughly 4,400 and 1,600 years ago alone, there were 73 distinct thin layers of ash deposited by people. And the burning evidence stretches back even further — to around 25,000 years ago.
But here's what really got me: the grasses weren't just randomly collected. The researchers identified 29 different types of phytoliths, but the grass remains dominated — up to 97% of the total. And they found evidence of different grass species, including some that prefer cooler temperate conditions and others that thrive in warmer, more humid environments.
Think about what this means. The landscape around the cave included forests and woodlands with many different plants. But the people using the cave deliberately chose grasses growing near the entrance. They brought in whole plants — stems, leaves, flowers, and roots, including parts that weren't even edible.
Why grasses? Why those specific ones? We're not entirely sure yet, but the intentional selection is clear.
A Standing Stone Among the Layers
As if the plant evidence wasn't enough, the researchers also found something else buried among the ash layers: a standing stone about 28 centimeters high. Analysis showed it was intentionally placed inside the cave for ritual purposes around 2,000 years ago.
I don't know about you, but I find this absolutely captivating. For thousands of years, people were returning to this dark cave, bringing in carefully selected plants, burning them in organized rituals, and leaving ceremonial objects. This wasn't a dwelling. It was a sacred space.
What This Means for Understanding Indigenous Australia
Professor Bruno David from Monash University noted that this fits with other evidence indicating Cloggs Cave was a place of long-lasting ritual activity rather than ordinary habitation. That's a crucial distinction.
This research is also a beautiful example of what happens when Indigenous communities are partners in archaeological work rather than subjects of study. The GunaiKurnai people requested this investigation because they knew their ancestral lands held secrets. They guided the research. And the findings honor what their oral traditions have always maintained — that these caves were places of profound spiritual significance.
Twenty-five thousand years is almost impossible to fathom. The people who first began using Cloggs Cave for rituals were creating traditions that their descendants would continue for millennia — through ice ages, through climate changes, through everything history threw at them.
And the evidence of those traditions? It was hiding in tiny, microscopic plant fossils all along, waiting for someone to look closely enough to see it.
Source: ScienceDaily