The Mysterious Lost Underground Civilization of the Grand Canyon

Brent Swancer explores the mystery of the lost civilization of the Grand Canyon.

Lying within the U.S. state of Arizona is one of the most majestic natural wonders of our planet, the Grand Canyon. Carved over hundreds of millions of years by the Colorado River and measuring 277 miles (446 km) long, up to 18 miles (29 km) wide, the Grand Canyon is a major natural phenomenon, but it is also a place of deep historical mysteries and oddities as well. One of the most unusual of these is the claim that somewhere under the earth here once ruled an advanced civilization with unknown origins and who have become lost to history, which supposedly inhabited a complex cave and cavern system that they left behind to sow bafflement and speculation with their passing. It is a very curious, far-out case that, if real, could shake our historical perceptions to the core. Read more