In 2015 alone more than 300 million people visited the US national park system. Some stayed for a few hours, others for a few days - and, occasionally, some never make it out. Join the guys as they take a closer look at the fact, fiction and conjecture surrounding disappearances in national parks.

They don't want you to read our book.: https://static.macmillan.com/static/fib/stuff-you-should-read/

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