Get Lost in Mega-Tunnels Dug by South American Megafauna
Unknown 20 years go, massive paleoburrows in southern Brazil are a formidable mystery for the handful of researchers who study them.
Could be giant sloth or armadillos. (via)
Unknown 20 years go, massive paleoburrows in southern Brazil are a formidable mystery for the handful of researchers who study them.
Could be giant sloth or armadillos. (via)