Professor Bruno David (L) and Uncle Russell Mullett (R) pictured in the cave.

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CNN  — 

Buried deep in an Australian cave, archaeologists have uncovered evidence that an Aboriginal ritual may have been passed down 500 generations and survived 12,000 years, making it the oldest known continuous cultural practice in the world, according to a new study.

While investigating Cloggs Cave, situated near Buchan – a small Australian town about 350 kilometers (217 miles) east of Melbourne – researchers found a piece of wood protruding out of the ground. They cut it, and used carbon dating to determine it’s 12,000 years old, from towards the end of the last Ice Age.

“And we were going ‘Wow, what’s this?’ Bruno David, a professor at the Monash Indigenous Studies Centre in Australia who co-authored the paper, said in a recorded conversation shared with CNN. “12,000-year-old artifacts don’t survive in the ground for that long. Normally they just disintegrate.”