Northwest Hiker presents Hiking in Washington. Department of Forestry - Tillamook State Forest Elk Creek Campground. Department of Forestry - Tillamook State Forest Campgrounds in the Tillamook State Forest. Www.cowlumbia.com/images/cowlumbiacm12b-1to1.pdf. Portland Hikers • PortlandHikers.org. Mazamas | Your Adventure Starts Here.