Escarpment Trail in Porcupine Mountains Wilderness State Park, Michigan

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Escarpment Trail in Porcupine Mountains Wilderness State Park, Michigan (© Pat & Chuck Blackley/Alamy)

Escarpment Trail in Porcupine Mountains Wilderness State Park, Michigan (© Pat & Chuck Blackley/Alamy)

Escarpment Trail in Porcupine Mountains Wilderness State Park, Michigan

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