Federal--north Cascades National Park Service Complex, Headquarters Information Office, Marblemount Ranger Station, Wilderness Information Center Marblemount, WA 98267 Phone : (360) 873-4500 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--national Park Service, Marblemount Ranger Station, Wilderness Information Center 7280 Ranger Station Rd Marblemount, WA 98267 Phone : (360) 873-4500 Business Category Government Offices-Federal Government Offices & Public Schools