This Trails Illustrated map offers comprehensive coverage of the Old Faithful area and southwest Yellowstone National Park in Wyoming and Montana. Coverage of the Old Faithful area of Yellowstone National Park includes Heart Lake BMA, Pitchstone Plateau, Bechler Ranger Station, South Entrance, Teton Wilderness, John D. Rockefeller Jr Memorial Parkway, Jedediah Smith Wilderness, Winegar Hole Wilderness, Bechler Canyon, Cascade Corner, Firehole BMA, Shoshone Lake, Western half of Yellowstone Lake. Includes UTM grids for use with your GPS unit.