East Fork Boulder Trail (27) begins at Box Canyon Trailhead and parallels the East Fork Boulder River to Slough Creek Divide. This popular route is used to access the Lake Plateau via Rainbow Creek Trail 28, as well as the Slough Creek drainage on the Gardiner Ranger District. The trail is in good condition.Length: 9 miles. Wilderness, low difficulty, high use.Trail Begins: Box Canyon StationTrail Ends: Trail 104Area Map: Gallatin National Forest Visitor Map USGS Map1: Mount DouglasUSGS Map2: Haystack PeakTownship 6S; Range 12E; Section 28
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