CLASSIC: Is there really a lost civilization in the Grand Canyon? - a podcast by iHeartRadio

The Grand Canyon is a breath-taking natural formation, and every year more than 4 million people visit. Despite its popularity, areas of the canyon remain dangerously remote, and it’s no secret that numerous people have disappeared in or around the canyon over the years. But what if there was more to the story than missing couples and individuals? Is it possible that an entire civilization went missing in the canyon?

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