Massive Tunnels Found In The Jungle

Backed by the numerous discoveries by archaeologists and other researchers, we know that our planet looked completely different ten thousand years ago. In Brazil, experts found a tunnel system that highlights this concept. The caves are lined with scratch marks and peculiar carvings from the claws of a giant beast, which confused scientists for decades. Were huge clawed animals really scouring the planet so recently? Photo Credit: watchJojo / YouTube