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This Is the Most Claustrophobic Hike in Oklahoma —Would You Try It?

But if you're braver than I am, the Robbers Cave Trail at Robbers Cave State Park is a claustrophobic hike in Oklahoma you ...
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11 Rock Formations So Strange You’ll Think They Were Built by Aliens

Nature doesn’t follow blueprints, and sometimes the result is strange enough to stop you in your tracks. Around the world, erosion, lava, and sediment have shaped landscapes that feel less like ...