Page Type Page Type: Mountain/Rock
Location Lat/Lon: 48.88662°N / 113.62339°W
Activities Activities: Hiking, Mountaineering, Scrambling
Seasons Season: Spring, Summer, Fall
Additional Information Elevation: 8966 ft / 2733 m
Sign the Climber's Log


Yellow Mountain is an obscure and remote peak located in the extreme northeast corner of Glacier National Park. It is, as one would expect, comprised of yellow rock, which makes the peak easy to pick out from vantage points along the eastern front. However, those that have traversed Yellow Mountain's winding ridges will be the first to tell you that this area features a kaleidoscope of colored rocks. Magnificent formations of red, grey, black, green and white rock can be found littered across its many loose slopes. 

One of the joys of experiencing this corner of the park is its remoteness. Most human visitors to the area are on multi-day backpacking trips and stick to the beautiful Redgap Pass Trail, so human traffic is very light on Yellow Mountain. As such, it is a paradise for mountain goats and bighorn sheep, and off-trail hikers often utilize their indelible trails to navigate this area. One of these goat trails provides a spectacular shortcut route from Ptarmigan Tunnel to Redgap Pass, while a maze of additional game trails meanders across the seemingly endless ridge tops. This is truly a magical place, and one that any Glacier Park junkie should visit at least once.

Yellow Mountain ridge
Pondering the winding ridge that leads to the summit of Yellow Mountain.

A note regarding a discrepancy I have observed regarding the true summit elevation of Yellow Mountain. USGS quads show a highpoint of 8,966 feet, which is in fact the highest point on the Yellow Mountain massif. However, both J. Gordon Edwards and the popular National Geographic Trails Illustrated maps of Glacier reference a highpoint of 8,766 feet.  Anyone who has been to Yellow Mountain will tell you that the true summit is east of Point 8766. Since many people utilize the Trails Illustrated maps, I thought I'd include a photo of the map with correct summit identification.

true summit of Yellow Mountain - Trails Illustrated topo map
The true summit of Yellow Mountain is not labeled on Trails Illustrated topo maps.

Getting There

Yellow and Chief
Yellow and Chief from US-89
Yellow Mountain is located between the popular Many Glacier Valley and Chief Mountain in the northeastern section of Glacier National Park. It is several air miles northeast of Many Glacier Hotel, which provides the most practical starting point for any long day excursions to the peak. Many Glacier is accessed from US-89 via the small, unincorporated town of Babb, Montana. A paved, pothole ridden road winds 12 miles from Babb to its terminus one mile past the hotel at the Swiftcurrent Motor Inn; this is the only way to enter Many Glacier via automobile. Babb is located 8 miles north of St. Mary, a small, busy tourist village at the east entrance of Going-to-the-Sun Road, and 11 miles south of the US-Canadian border crossing at the Port of Piegan in Carway, Alberta.

Two approach options exist farther to the north from Montana Highway 17 (Chief Mountain Highway), a bumpy paved road that begins four miles north of Babb off US-89. They will be discussed in some detail in the "Route Information" section below.


The summit of Yellow Mountain is atop an extremely long, meandering ridge. As such, all paths to the summit require a lengthy approach. Several route options are outlined below, but by no means is this a definitive list. This massive mountain has limitless route options, and I've only chose to include routes that I know have been completed by climbing parties. 

Ptarmigan Tunnel to Redgap Pass via Goat Trail with Descent to Poia Lake

In my opinion, this is most exciting and scenic route. By utilizing two cars, parties can make this into a long, exciting circuit route. The starting point is the Iceberg/Ptarmigan Trailhead near Swiftcurrent Motor Inn. Shuttle an additional car to either the Many Glacier Entrance Station or the Apikuni Falls/Poia Lake Trailhead, both east of Many Glacier Hotel. You will thank yourself at the end of what will almost certainly be a very long, tiring day! Elevation gained from the trailhead to the summit is just over 4,000 feet. I estimate that there is an additional 2,000+ feet of elevation gained over the course of the route. As for distance, the circuit route varies between 20-24 miles long, depending on the chosen exit point on Many Glacier Road. Nearly half is off-trail, so it will take even strong hikers a minimum of 10 hours to complete. A word of caution about the hike out from Poia Lake: many hikers are frustrated by 1,400 foot climb from the lake over Swiftcurrent Ridge. It's a tiring stretch, and disappointing in that you lose the 1,400 feet right back over the final three miles to the trailhead. I guess what I'm trying to say is, plan your day accordingly. Wait for good weather, and do not attempt the goat trail before the middle of July without ice axe, crampons, rope, and the ability to use them. Since this route may be a stretch for a day trip for some folks, I'll discuss options for shorter outings that involve backcountry camping farther down the page.

Please visit my route page for a detailed route description from the Iceberg/Ptarmigan Trailhead to Redgap Pass. In summary, hike the maintained trail through Ptarmigan Tunnel (5.1 miles and 2,300 feet of elevation gain). North of the tunnel, it is possible to scramble up to the ridgetop to the northeast and locate a marvelous goat trail that descends to Redgap Pass.

Seward from Redgap PassSeward Mountain at left. The red bump at right is the first landmark on the long ridge to Yellow Mountain.

From here, there are two options, one of which includes the tiring, but easy class II slog up Seward Mountain. It's 1,400 feet, takes no more than an hour, and affords spectacular views. To continue to Yellow Mountain, simply follow the summit ridge east-southeast. The other option from Redgap Pass is to follow a fantastic network of of game trails that lead east across the great scree-covered southern slopes of Seward. Both routes head towards a small sharp red bump that protrudes on the ridge, where a well-worn game trail leads easily around the north face. Note that the area between the small red bump and Seward Mountain has been dubbed "Seward Saddle" by J. Gordon Edwards.  Most parties will require a minimum of two hours to reach Yellow Mountain's summit from Redgap Pass. 

view north from Seward Saddle
View north from "Seward Saddle"
pondering Yellow Mountain
Traversing around the first bump on Yellow's long summit ridge

Cross over to the east side of the ridge and follow it towards the northeast. You'll want to descend a few hundred feet to the east/southeast, as the rising ridge eventually ends in rotten, steep cliffs. Carefully down climb to the scree slopes below, then pick up a solid game trail and continue on the ridge towards a prominent tower of rock. 

continuing along the Yellow Mountain ridge
Safer terrain below the cliffs. Follow game trails towards the prominent tower of rock ahead, which is bypassed on the right.

Bypass the tower on the right. As you continue eastward, take note of the broad ridge that branches off to the southeast; this is the fastest and easiest way back to Poia Lake, a solid human trail, and eventually civilization. A desolate basin with a shallow, unnamed lake soon comes into view east of the Poia Lake descent ridge. Continuing on, another rounded dome of rock protrudes from the ridge. Save your energy and try to resist gaining unnecessary elevation by climbing the dome; look for game trails that traverse its lower slopes. Once you've traversed to the opposite side, the summit block of Yellow Mountain finally comes into view. The view to the east is mesmerizing, as the rocks transition to a brilliant yellow hue. 

unnamed lake beneath Yellow Mountain
The ridge at right leads to a route to Poia Lake.
oh, the ridges you'll walk
FINALLY, the summit of Yellow Mountain (at left)!!!

The summit cairn is located at the eastern end of the block. The actual high point is NOT yellow, and it is nothing more than a tiny rise on top of a broad pile of rocks. Although the summit itself is not that spectacular, the views certainly are! The ridge continues on for what seems like forever, and could be followed all the way toward the east summit of Yellow (marked at 8,655 on topo maps), and out towards Sherburne Peak, but this would certainly add time to an already long day. Gordon Edwards describes this area as a "garish moonscape" (1), which I believe is quite fitting.

descending Yellow Mountain
Descending Yellow Mountain. To head to Poia Lake, take the ridge at left.
To descend to Poia Lake, retrace your steps back along the winding ridge. Traverse around the first dome on the ridge, and the shallow, unnamed lake comes into view on the left (south). The goal is follow the ridge that trends southeast high above the unnamed lake. The ridge comes to a tiring, broad rise (Point 8186 on the Many Glacier Nat Geo Trails Illustrated topo map), upon where numerous scree-covered slopes and gullies can be used to descend to the trail near Poia Lake. The going should never be harder than class II, so if you run into cliffs, look for easier terrain. If you are lucky, good scree skiing can be had! Keep working your way downhill until you intersect the human trail. From there, hike past Poia Lake, where it's a frustrating climb of 1,400 feet over 3.5 miles to the crest of Swifcurrent Ridge. Shortly after Swifcurrent Ridge Lake, there is a trail junction. If you want to exit at the Many Glacier Entrance Station, bear left and follow the steep trail for ~1 mile to the road. Otherwise, stay on the main trail, and in ~3 miles you will be at the Apikuni Falls/Poia Lake Trailhead. Head left on a a steep, crude trail for ~1 mile to the Many Glacier Entrance Station, or stay on the main trail for another 3 miles. Wherever you opt to exit, I hope you have a car with some ice cold beers waiting for you!

Poia Lake Trail

descent route to Poia LakeMultiple routes exist on the south slopes near Poia Lake
It's much shorter to start at either of the Poia Lake trailheads located off Many Glacier Road. Keep in mind that shorter is relative, as a day outing would still likely require at least 10 hours. Simply retrace the descent route I outlined above. Note that the elevation gain from Poia Lake to Yellow's summit is ~4,000 feet. The route will miss most of the splendid ridge walk, and will not be anywhere near as exciting as the goat trail to Redgap Pass, but this is still worthwhile.
The Apikuni Falls/Poia Lake Trailhead is one mile east of Many Glacier Hotel. It's 6.6 miles one-way with 1,400 feet of elevation gained and lost on a nice trail to the backcountry site at Poia Lake.  The alternate starting point originates from Many Glacier Entrance Station, 4 miles east of Many Glacier Hotel. This trail is 2 miles shorter, but be forewarned that it is VERY steep! 

Slide Lake Approach

Yellow Mountain from Slide LakeYellow Mountain viewed from the outlet of beautiful Slide Lake.
In 1914, a large rockslide occurred on the north slopes of Yellow Mountain. It dammed a large creek draining the rugged valley, and Slide Lake was formed. There is a great backcountry site at the lake, and on a trip to nearby Gable Mountain in June of 2012, I noted that Yellow could be approached from open meadows a few miles west of Slide Lake. From the campground, follow trails around the north shore of Slide Lake. Ford the shallow creek above the head of the lake and head west through mixed timber and meadows. In a short while, the ruins from an old mining cabin are reached, backed by a tremendous waterfall a bit farther to the west. Easy routes exist around the east side of the falls. Follow game trails under the impressive crumbly cliffs of Yellow Mountain, and soon a series of broken meadows is reached. Continue to the southwest, and the cliffs will give way to a very broad drainage that climbs up hill to the southeast. Follow the drainage all the way to the ridgetop, to a point just west of the summit. Walk the easy ridge to the summit from there. Please note that I have not completed this route. I know a party that started at Poia Lake, climbed up to Yellow Mountain via the "Alternate Poia Lake Route" mentioned below, and descended to the meadows far west of Slide Lake in late summer 2011. They reported no difficulties whatsoever on their descent.

Alternate Poia Lake Route

The group that I mentioned above took an interesting ascent route from near Poia Lake that is at least worth noting. On the Many Glacier National Geographic Topo Map, Point 6432 is marked just to the east of Poia Lake. Several drainages confluence in the vicinity of this point, and eventually tumble over a large cliff into Kennedy Creek in the form of a beautiful waterfall. The group began climbing a bit east of the falls, heading generally towards Point 6432, from where they simply followed the incredible ridge towards Sherburne Peak. They did not venture out to Sherburne, but rather followed the ridge over Yellow's east summit (8,655 feet) all the way to the main west summit. From there, they descended to the northwest and camped in the expansive meadows of the Seward Mountain drainage. The next day they hiked over Gable Pass and down Lee Ridge in what sounds like an incredible trip! I hope to attempt this alternate ascent route in 2013, and will be certain to update this page when I have more information.

Summit Views

Yellow Mountain affords a very interesting vantage point, and there are great views in all directions. The wild Otatso Creek drainage to the north is bordered by the impressive boulder fields surrounding Gable and Chief mountains. Make sure to check out the view down to Slide Lake, which I recall is only visible from the far western edge of the summit block.  Mount Merritt and Mount Cleveland rise prominently to the west. All the major peaks of the Many Glacier Valley are visible, and its enjoyable to pick them out from this unique vantage point. Perhaps the most remarkable aspect is to take in the odd, sprawling expanse of Yellow Mountain. 

When to Climb

bypassing the snow
Squeezing around snow in mid-July on the goat trail to Redgap Pass

Due to extreme winters along the Continental Divide, problematic snow can linger on trails and mountain slopes well into July and August. Hence, the prime climbing season in Glacier is rather short, often beginning in June and lasting into late September/early October. However, some lower peaks and south facing slopes can be safely attempted much earlier in the season. Your best best is to inquire locally about snowpack and weather conditions. Personally, I have found the NOAA website to be the most reliable resource for detailed weather forecasts and snowpack information for the greater Glacier area.

Snow will greatly complicate the goat trail connecting Ptarmigan Tunnel to Redgap Pass, so it's best not to attempt this route before mid-July. Some amount of snow will likely remain on/near the goat trail for the duration of the summer, but enough melts off to where a safe path can be taken. If you arrive at the entrance to the goat trail and find the path blocked by snow, it's best just to turn around and live to see another day. The Yellow Mountain ridge is incredibly long, and very exposed. Afternoon thunderstorms are common during the summer in the northern Rockies, and I can speak from experience that this ridge is a very bad place to be when the weather turns. It's best to attempt this ridge walk when the forecast is in your favor.

Where to Stay

The fantastic Many Glacier car campground is located at the terminus of the Many Glacier Entrance road, one mile past the Many Glacier Hotel. The campground has 109 sites and as of November 2016 fees are $23 per night. Be forewarned: describing Many Glacier Campground as busy in the summer months is nothing short of an understatement. From mid-June to Labor Day, the campground almost universally fills well before noon. As of 2016, the NPS has implemented a reservation system and half the sites are reservable in advance. The remaining sites are available on a first-come, first-serve basis only. If you do not have a reservation, I recommend arriving before 7am to line up in the queue of walk-up campers. Information on historic campground fill times, reservations and camping regulations can be found on the NPS camping webpage.

Many Glacier Hotel offers 215 rustic rooms in a spectacular setting on the eastern shore of Swiftcurrent Lake. The hotel turned 100 in 2015, and does not have many modern amenities. It is extremely busy during the summer, and the concessioner recommends booking several months in advance. Rates range from approximately $150 to nearly $300 per night, with the majority of rooms in the $200 range. Visit Xanterra’s website for more information. There are also numerous local lodging opportunities (campgrounds, motels, cabins) just outside the park in and around the small towns of Babb and St. Mary.

If you are interested in setting up a basecamp at either Poia or Slide lake, both offer backcountry campsites. As of November 2016, permits are $7 per person per night and can be obtained at various visitor’s centers (St. Mary and Many Glacier are nearest). There is an advance reservation system (and associated fee), or sites can be obtained on a walk-up basis. Please visit the NPS backcountry camping webpage for more detailed information.

Red Tape, Wildlife, Safety, etc.

Entrance Fees
A fee is required for all persons entering Glacier National Park. As of November 2016, single vehicle rates are $30 for a seven day pass, or $45 for an annual park pass (increasing to $50 in January 2017). A lower fee is charged for hikers and bikers; please visit the NPS fees webpage for a full explanation of the entrance fees.

Seasonal Closures
Glacier is subject to extreme winter weather conditions, and as such, much of the park is virtually inaccessible for the majority of the year. The Going-to-the-Sun Road is typically open in its entirety from mid-June to mid-September, and many of the developed areas of the park (including the historic lodges and most of the campgrounds) operate for a short window as well. Information on the operational status of front country campgrounds and park roads can be found by clicking on the hyperlinks.

Glacier Rock Grading
Due to the sedimentary nature of the rock in Glacier National Park, unique rock grading systems have been established by both Gordon Edwards and the Glacier Mountaineering Society. Please refer to the Glacier National Park Rock & Grading Systems Summitpost page (authored by Fred Spicker and Saintgrizzly) or the website of the Glacier Mountaineering Society for detailed information. If you are new to climbing in Glacier, I highly recommend checking out this info before attempting any climbs in the park. Oh, and don't forget to wear your climbing helmet!

A Climber's Guide to Glacier National Park
Pick up a copy of Gordon Edwards' classic A Climber's Guide to Glacier National Park. It's an absolute must for anyone who wants to safely venture to one of the park's many accessible mountain summits. Edwards spent many years as a seasonal ranger in Glacier, where he developed a deep passion for exploring the park's mountains and sharing its splendors with others. The book provides a fantastic history of climbing in Glacier, and his detailed and colorful route descriptions are a fantastic introduction to off-trail hiking and climbing in the park.

grizzly bear off Many Glacier Road
Hey bear!
The park is home to lots of potentially dangerous wildlife, including moose, black bear, grizzly bear, and mountain lion. Hike loud, carry bear deterrent spray (and know how to use it!), check local trail postings (for area warnings/closures) and let someone know your intinerary before heading out into the park. Also, note that special precautions are in place in all front and back country campgrounds to limit human-bear encounters. Regulations are posted everywhere (picnic tables, ranger stations, bathrooms) and it is every visitor's responsibility to take them seriously. Remember, a FED BEAR IS A DEAD BEAR! Please visit the NPS camping webpage for more detailed information.

External Links

Visit the FANTASTIC Glacier National Park page, a labor of love by late Summitpost member Saintgrizzly (R.I.P.), or the NPS webpage for more detailed information on "The Crown of the Continent".


1. Edwards, J. (1995). A Climber's Guide to Glacier National Park (1st edition published in 1961). Helena, MT: Falcon Press Publishing Co., Inc.


Thanks to my buddy Josh Olson for helping with compile some route information and photographs. His contributions are greatly appreciated. Special thanks to Zach Eagan, Rebecca Lahr, and James & Emily Hackethorn, for whom I am forever grateful for your company on some long, memorable climbing days on Yellow Mountain!



Children refers to the set of objects that logically fall under a given object. For example, the Aconcagua mountain page is a child of the 'Aconcagua Group' and the 'Seven Summits.' The Aconcagua mountain itself has many routes, photos, and trip reports as children.