Did giant ice age beasts carve these vast caves in South America?
Briefly

At 75, Vadevino Alano guides visitors to the Armadillo's Den cave in Brazil, revealing its ancient history and significance. With archaeologist Juliano Campos, Alano discusses the local legend of Jesuit missionaries hiding gold, but deeper mysteries lie within. The cave's ceiling shows grooves possibly made by giant ground sloths, indicating its creation by these extinct creatures. Explorers previously speculated about Indigenous construction, but recent research leans towards the theory of megafauna involvement, with ongoing investigations into how these vast palaeoburrows were formed.
"This is an archaeological and palaeontological marvel," says Campos, highlighting the significance of the caves created by extinct megafauna that captivated both local guides and scientists.
Research has focused on the theory that the caves were carved by extinct megafauna, specifically investigating how they shaped such enormous burrows in solid rock.
Read at Nature
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