Trek through time: Explore the past by hiking Southwest Washington landscapes with incredible views columbian.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from columbian.com Daily Mail and Mail on Sunday newspapers.
Plymouth, Washington is a 33-minute drive south of the Tri-Cities and is famous for a number of things - including hidden treasure at the bottom of the Columbia River, a cool campground, and this fun hike near McNary Dam.