BOULDER MOUNTAINS

The Boulder Mountains are comprised of four major divides: The Northern Divide, the Sheep Divide, the East Fork Salmon/North Fork Big Lost Divide and the Boulder Front (covered below). The range is composed of granite, Challis Volcanic material and highly metamorphosed rocks that have been extensively shattered and faulted. These mountains encompass a wide variety of mountain shapes over a large swath of Idaho. Ryan Peak at 11,714 feet is the highest peak in the range. Additional information can be found in the book on pages 231 to 243.

Traverses

Boulder Basin Peak, Silver Peak and Lorenzo Peak Traverse by Derek Percoski

Access Updates

Galena Lodge Area: Access in the northern section of the Boulder Front section of the range has seen improvement thanks to the cooperative work of Blaine County and the Forest Service. See this link for imformation on the Galena Lodge Trail system.

Boulder City Access, [(A)(8) page 241]: Derek Percoski provided the following update on one the most technical driving access routes into the Boulder Mountains.  “A few years ago I saw a beefy stock pickup truck or two at Boulder City, but my recommendation is that a 4×4 owner should not show up with the intention of driving all the way. ~8900′ is a good stopping point, and from there it’s a short hike to the crux to see if you want to attempt it. The crux can be described as an 18″ shelf during the steepiest and rougest part of the road. If you’re up there on a summer weekend and just drive until you get stuck, you might cause a traffic jam. I’ll say it’s for ATVs, modified off-road vehicles, and possibly 4x4s with extra high clearance.”

The Boulder Front viewed from the east. From left to right: Perkins Peak, Kent Peak, Ryan Peak and North Ryan Peak.

The Boulder Front viewed from the east. From left to right: Perkins Peak, Kent Peak, Ryan Peak and North Ryan Peak.


THE NORTHERN DIVIDE.

The northern Boulder Mountains vary significantly from the peaks bordering Ketchum. The country is wide open and contains many opportunities for crosscountry travel.

Hiking along the Northern Boulder Divide (page 232) you have a good chance of seeing wild horses roaming the ridges.

Hiking along the Northern Boulder Divide (page 232) you have a good chance of seeing wild horses roaming the ridges.

 Upper Malm Gulch.

Upper Malm Gulch.

Another shot in Malm Gulch.

Another shot in Malm Gulch.

Lower Malm Gulch.

Lower Malm Gulch.


THE BOULDER FRONT

Nearing point 10451.

Nearing point 10451.

Boulder City.

Boulder City.

Boulder City ruins.

Boulder City ruins.

The Boulder Mountains house some great stands of Aspen.

The Boulder Mountains house some great stands of Aspen.

The airy summit of Senate Peak.

The airy summit of Senate Peak.

The Boulder Crest, including Easley Peak and Cerro Ciento from Peak 11240.

The Boulder Crest, including Easley Peak and Cerro Ciento from Peak 11240.

Galena Peak from Senate Peak.

Galena Peak from Senate Peak.


THE EAST FORK SALMON/NORTH FORK BIG LOST DIVIDE

Crossing the summit ridge to the true summit.

Crossing the summit ridge to the true summit of Meridian Peak.

 

Mountain Range: Boulder Mountains

Photos:

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