Green Trails Maps, Snoqualmie Pass Gateway 207SQ Green Trails Maps - One of the 10 Essentials! Scale: 1:24000 Projection: Lambert Conformal Conic UTM Zone: 10 Datum: NAD27 Sheet Size: 18x24 Inches; Fold 6x9 Inches Features: 1:24,000 Scale Map or the Snoqualmie Pass Area. Part of the Issaquah Alps- Snoqualmie Pass Gateway Series which includes maps 203S, 204S, 205S, and 206S