Green Trails Maps, Stevens Pass 176 Green Trails Mpas - One of the 10 Essentials! Scale: 1:69500 Projection: Lambert Conformal Conic UTM Zone: 10 Datum: NAD27 Sheet Size: 12x18 Inches Features: Stevens Pass Nordic Center, Alpine Lake Wilderness, Waptus Lake, Granite Mountain, Surprise Mountain, Pacific Crest Trail.