What It Feels Like to Sleep on the Side of a Mountain
– [Narrator] What’s the highest you’ve ever slept at? – [Mark] Almost a mile. When you don’t have a fear of heights, it’s not really scary. It’s like being in the craziest tree house that you could possibly imagine. – [Narrator] That’s Mark Sinnett. He’s a professional rock climber, and he’s talking about sleeping in a tent. – [Mark] They’re called portaledges. – [Narrator] That’s hanging off the side of a mountain. He’s been climbing for over 30 years, and his favorite walls to climb are really, really high. –…
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