Dolliver Memorial State Park in northwest Iowa is unique for its natural bluffs and geological formations. Dolliver overlooks the Des Moines River Valley and spreads across 594 acres of flatlands and rugged trails. Highlights of the park include Boneyard Hollow, the Copperas Beds and historic Native American mounds. Take your time while venturing in this surprising park and try spotting some of the hidden surprises Dolliver has to offer.