Arapaho and Roosevelt National Forests
Boulder Ranger District
Difficulty: 3 (Easy)
Elevation: 8,900' to 10,000'
The Mammoth Gulch Road (also National Forest System Road (NFSR) 176) is fairly easy and not very steep. It continues up the valley for two miles until closed by a gate on private property. The Nebraska Hill Road, NFSR 183 forks right (north) just after Mammoth Gulch Road leaves 4N. It is a mile long to its end at the site of the old reservoir where there is good fishing and camping. A half mile farther west on 4N, the Baltimore Ridge Road, NFSR 416 turns left (south) and climbs a mile up to an old mining area.
