Prineville Rockhound Pow Wow; Crook County Fairgrounds, 1280 South Main Street; Wed. 9-5, Thu. 9-5, Fri. 9-5, Sat. 9-5; Free Admission; Sunday opens at 9 a.m., closes at 3 p.m. Over 40 vendors from across the U.S. An 80th anniversary party for the public, field trips, kids area.