Maquoketa Caves State Park is one of Iowa's most fascinating natural attractions, and Dancehall Cave is the park's largest and most famous cavern. A short but lovely hike that really immerses visitors in the fascinating landscape, Maquoketa Caves Loop is a manageable 1.6-mile walk that offers plenty of adventure. There's an array of spectacular vantage points along the trail and opportunities to peek into grottoes, including Dancehall Cave.

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Ranked: the most beautiful natural wonder in every state