Around mile 90 of the Glenn Highway, a section of the Old Glenn highway peels off and ends in a concrete barricade. Though there are no signs or trail markers, this dead-end is the start of the Anthracite Ridge Trail, which begins as a clear ATV trail and eventually becomes a steep scree slope up to the 6000' Anthracite Ridge. Please note that the hike to the ridge is extremely strenuous and is much longer than the 4-mile GPS track shown.