Oyster Dome Trail is a 6.5 mile out and back trail that features a cave and is rated as moderate. The trail is primarily used for hiking and is accessible year-round. Dogs are also able to use this trail.
From the south, take the Larrabee State Park/Chuckanut Drive exit off of I-5 (exit 231) and drive just past the 10 mile post on Chuckanut Drive (SR 11) and park on the paved, wide place on the west shoulder. From Bellingham, take exit 250 and drive south on SR 11 about 12 miles to the paved right shoulder. There probably will be a string of parked cars, and there isn't much room, so come early. The Pacific Northwest Trailhead is on the east side of the highway.
Park on west side of the street.