: A leading theory suggests these burrows provided a stable environment during Earth’s transition between extreme cold and warm periods. They offered protection for young and a consistent temperature during harsh, dry climates.
The Echoes of Giants: Brazil’s Prehistoric Subterranean Legacy Brazil Underground_1080.mp4
These giant architects went extinct approximately , a period that coincided with both a major ice age and the arrival of humans in South America. Today, over 1,500 of these burrows have been identified, though many remained hidden until discovered by local farmers or construction crews, such as a major 50-foot burrow unearthed in 2009. Conclusion : A leading theory suggests these burrows provided
: These creatures were colossal; giant sloths could weigh up to 9,000 lbs—roughly the size of a modern elephant. Brazil Underground_1080.mp4
