Driftwood on shore of Red Rock Lake/Reservoir Iowa Photo by Bill Roehl / Flickr (noncommercial use permitted with attribution/no derivative works).
Elk Rock State Park
Elk Rock State Park in Iowa offers modern and equestrian camping, a playground, boat rentals and lake fishing, and trails for hiking, horseback riding, and mountain biking. Also referred to as Red Rock (the park is located on both sides of the Red Rock Reservoir.
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