Elevation: 6,558 ft
Prominence: 488
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This peak is not in the book. Published November 2023
Peak 6558 is one of two rock-and-sagebrush hills located on the northeast side of Mahogany Hill (8,441 feet) in the Pahsimeroi Range. Its south ridge is an easy scramble from a 2-track jeep road. USGS Mahogany Hill
Access
From US-93 northeast of Challis, drive south on [signed] Custer Road (which is just west of Ellis) for about 21-22 miles southeast to the [signed] junction with Doublespring Road (5,585 feet on map). Go right/SSE onto Doublespring Road and drive 1.1 miles to an unsigned junction with a 2-track road (right). This junction is at 5,761 feet and 44⁰25’26”N, 113⁰48’22”W. Park here.
Map Errors
Neither the National Forest Map nor the USGS topo map show two critical road segments (and junctions) for this climb.
South Ridge, Class 2
The Climb
From the road junction, hike briefly southwest up the 2-track road to an unsigned, 3-way road junction. Go right/northwest here. The 2-track road heading straight/southwest from this junction is not shown on maps. Hike northwest on a 2-track road for ½ mile to another unsigned junction. Go left/southwest here and follow this 2-track road west-southwest for about ¾ mile to reach the [obvious] base of the south ridge of Peak 6558.
Leave the 2-track road (which is drivable to this point) and scramble north up the ridge in grass/scrub and protruding ground boulders to reach the rocky summit. The south ridge is not difficult. It is mostly a rock/boulder scramble that gets steeper and more difficult as you near the summit. The summit has a small cairn. The east and west sides of the south ridge are mostly impassable due to rocky cliff faces.
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Peak 6558 and its cliffy east face. The summit is at the far right end of the ridgeline. Livingston Douglas Photo
South Ridge/Southwest Face, Class 2
The Descent
From the summit, descend the south ridge to a point where the west side of the ridge relents and allows an easy downclimb southwest to grass/scrub slopes below and then a north-south 2-track road. Once on the road, follow it briefly northwest to reach a saddle at 6,070 feet. This concludes the first leg of today’s 2-peak adventure. Peak 6890 is up next.
Additional Resources
Regions: EASTERN IDAHO->Lost River Range->Pahsimeroi Range
Mountain Range: Lost River Range
Longitude: -113.8286 Latitude: 44.4306