10,000-Year-Old Mysterious Tunnels Discovered in Brazil — There’s Hundreds of Them – April 22, 2017

Hundreds of tunnels — which date back at least 10,000 years — have been discovered in Brazil. Some of the tunnels feature mysterious claw marks’ on the walls. “There’s no geological process in the world that produces long tunnels with a circular or elliptical cross-section, which branch and rise and fall, with claw marks on…

via 10,000-Year-Old Mysterious Tunnels Discovered in Brazil — There’s Hundreds of Them — Humans Are Free

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