The San Juan Preservation Trust is a private, non-profit and membership-based land trust dedicated to helping people and communities conserve land on the San Juan Islands in Washington state. Noted for its $6.4 million purchase of Vendovi Island, in 2010, and its $18.5 million acquisition of Turtleback Mountain on Orcas Island in 2006, the Preservation Trust has permanently protected 270 properties, 34 miles of shoreline and 14,000 acres on 20 islands, including land now managed as public parks, private nature preserves, and working farms and forests.