This half mile round trip out and back boardwalk is 1,700 feet of beautiful new wood through the wetland of Muddy Creek. Constructedin 2006 this boardwalk commemorates the famous environmentalist Homer J. Campbell. At the end of the boardwalk is a very nice covered wildlife blind with views over Cabell Marsh. Keep an eye out for egrets, herons, various waterfowl, and birds of prey such as eagles, hawks and ospreys.
From Corvallis Follow Hwy 99 south for about 8.5 miles from Avery Ave until you see the Refuge Road on the right. Take that road several miles until you see a sign for the trail on the left. If you reach a red barn you've gone too far.
Allthough the satellite imagery doesn't show it here, there is a road and a parking lot at the trailhead for this beautiful boardwalk. It was constructed in 2006 so the satellite imagery currently available for this region is a little dated.