View along the shores of Park Lake within Sun Lakes Dry Falls State Park. Sun Lakes Dry Falls State Park is located in eastern Washington State. Recreational opportunities include boating, fishing, hiking, camping and a public golf course. The area along the shore of Park Lake is shady oasis, with picnic areas, marina, ampitheater, playground and Sun Lakes Resort, with it's cabins, golf course and general store. To the northeast, the Dry Falls area is a natural preserve with hiking trails around the inconic Umatilla Rock, as well as fishing & boating on Dry Falls Lake and Deep Lake. The Dry Falls Interpretive Center overlooks Dry Falls, the site of a massive ice age era waterfall, created when ancient glacial dams burst sending flood waters through this area.