- From Highway 9, head north on WA 542 (near Deming).
- Turn right on Mosquito Lake Road (at the convenience store).
- Cross the North Fork Nooksack River bridge.
- Turn left on North Fork Road.
- Keep driving when you read the end of the paved road.
- When you reach a clearing and bridge, you have reached Racehorse Creek.
- Turn right and continue up the gravel logging road.
- Watch for the left-side turn, where you can park and walk to the fields.
- The Fossil Fields is a special place.
- West Access Trail (wta.org)
The western approach to Squak Mountain provides great access to a number of loop trails around the upper reaches of Squak Mountain, including direct access to the East Side Trail and May Valley Loop Trail from the Squak Mountain State Park Trailhead.