This huge sinkhole was formed when an underground cavern roof collapsed, creating a bowl-shaped cavity 120 feet deep. Small streams tumble down the steep slopes of the sink, disappearing through crevices at the bottom. The lush growth of plants and many of the animals of the park are similar to those of the Appalachian Mountains region. The sinkhole may be explored from the boardwalks and stairways or from the 4-foot wide nature trail that meanders along the top of the sinkhole and descends to the bottom of the Devil's Millhopper.

**Do not ride in or around the Park