Mammoth South Boulder Road is a hiking, biking, and horse trail in Madison County, Montana. It is within Beaverhead-Deerlodge National Forest. It is 1.3 miles long and begins at 6,887 feet altitude. Traveling the entire trail is 2.7 miles with a total elevation gain of 449 feet. The NE NW Section 36 Mine (elevation 7,028 feet) and SE NW Section 36 Mine (elevation 7,231 feet) quarries can be seen along the trail.
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