Traverse boulder fields and skirt eroded hollows on this 10.5-mile loop across the roof of the longest mapped cave system in the world.
From Louisville, I-65 S to exit 53, then KY 70 W. Follow signs to visitor center (pick up camping permit), then head .6 mi. S. R onto Green River Ferry Rd. Go L @ Research Center sign. Go .8 mi. to Maple Springs Loop parking.
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