Episode Details

Pennsylvania’s underground and aboveground wonders are wilder than you think—discover Penn’s Cave, the only all-water cavern in the U.S. with a haunting Seneca legend; Laurel Caverns, a 52-degree subterranean maze plunging 25 stories deep; Meadowcroft Rockshelter, where prehistoric humans lived nearly 19,000 years ago; and the Pennsylvania Grand Canyon, a 45-mile-long gorge perfect for biking, hiking, or rafting. From ancient caves to dramatic canyons, this state delivers nature’s most thrilling surprises.

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