Birch Bay State Park has an active summer interpretive program, a 1/2 mile Terrell Marsh Interpretive Trail and four interpretive signs throughout the park.
Located 20 miles north of Bellingham, Wash., and ten miles south of Blaine, Wash., near the Canadian border in Whatcom County.
http://www.tripleblaze.com/trail.php?c=3&i=3716