Colorado uses Game Management Units (GMUs) to describe hunting boundaries. National Geographic has created Map Pack bundles to help hunters plan and use the backcountry. This Map Pack covers the Flat Tops Wilderness by combining two maps to cover the entire area. The GMUs covered are 23, 24, 25, 26, 33, 34, and 35. The maps include GMU boundaries, private property, BLM lands, ATV trails (outside of wilderness areas), access roads, and much more. Buy the Map Pack and save 15%! The Flat Tops Wilderness Map Pack includes: Map 150: Flat Tops North Map 151: Flat Tops South Each Trails Illustrated map is printed on "Backcountry Tough" paper, which is waterproof and tear-resistant. A complete UTM grid is printed on the map to aid GPS navigation.