How many years has this been here?

Built in 1956, 62 years from my source (a member of the Club :))

http://www.douglasridge.org/about_drrc.html Douglas Ridge Rifle Club was founded in 1956. The Club sits on about 130 acres of woods (primarily Douglas Fir), open meadows, and a ridge rising 400 feet above the flatland. Neighboring properties are a mix of agricultural land, residences, and commercial businesses. DRRC is operated under a conditional use permit, and over the years DRRC has expanded to include six ranges, with a membership of over 800 people, and supports more than a dozen shooting disciplines. Our 1,000-yard Range is the longest Long Range in the state and one of the very few on the west coast.