Maryhill State Park is a 99acre Washington state park in Klickitat County with of shoreline on the Columbia River. The Maryhill Stonehenge, a full-scale concrete replica of Stonehenge, stands on a bluff not far from the park. Park activities include camping, hiking, boating, fishing, swimming, waterskiing, beachcombing, birdwatching, wildlife viewing, and horseshoes.