Elevation: 11,302 ft
This peak is not in the book. Judi Steciak and Carl Hamke provided the following route information. See their article on the missing Eleveners in the climbing history section of this site.
Lonesome Peak towers over Lonesome Lake. The peak is located at the western terminus of the Boulder Chain of Lakes. While the most direct access to this peak would be from this drainage I have not received any reports of ascents from the east. All climbs have started from the end of the road in Fourth of July Creek on the west side of the range.
West Ridge (Class 2) by Judi Steciak and Carl Hamke
D. O. Lee Peak dominates the view to the north along this ridge walk until the summit reveals an eye-popping vista of the Boulder Chain of Lakes. From the Fourth of July Trail, follow the Ants Basin Trail (A)(a.1)(p. 229) until it drops into the basin. A maintained trail that is not marked on the topographic map leaves the Ants Basin Trail and heads east to the Born Lakes. From the Born Lakes, head NNW over easy cross-country terrain to the foot of the west ridge. Ascend steeply through breaks in the cliffs to the ridge crest and follow it to the summit, staying to the south side of difficulties until just below the summit where it is easier to cross to the north side.
Dave Pahlas provided the following map showing his route to the summi which demonstrates that it takes a great deal of effort to reach the peak from Fourth of July Creek. Dave’s trip report is linked below.
Also see John Platt’s trip report linked below.