Obstruction Pass State Park is a state-operated, public recreation area in San Juan County, Washington. It consists of on the south end of Orcas Island.Activities and amenitiesPark activities include picnicking, fishing, crabbing, beachcombing, birdwatching, and hiking on a.6mi trail. The campground has nine tent spaces, one of which is reserved for kayakers on the Cascadia Marine Trail.