Obstruction Pass State Park is a public recreation area occupying 76 acres (31 ha) one mile southeast of Olga at the southern end of Orcas Island in San Juan County, Washington. Park activities include picnicking, fishing, crabbing, beachcombing, bird watching, and hiking on a zero-point-six-mile (0.97 km) trail. The campground has nine tent spaces, one of which is reserved for kayakers on the Cascadia Marine Trail.