South West Ridge

South West Ridge

Page Type Page Type: Route
Location Lat/Lon: 27.91919°N / 86.76590°E
Additional Information Route Type: Mountaineering
Additional Information Time Required: Expedition
Additional Information Rock Difficulty: 5.8 (YDS)
Additional Information Difficulty: variable, steep ice and snow, rock
Additional Information Number of Pitches: 20
Additional Information Grade: VI
Sign the Climber's Log


From the Mount Everest approach, Cholatse appears as a dramatic tooth of ice and rock. However, if you look at the mountain from the West in the Gokyo Valley, the angles aren't quite so steep, and ascents appear somewhat more moderate. One of the best vantage points for looking at Cholatse is from the summit of Gokyo Ri, where the peak dominates the view to the South East. From this vantage point, the South West Ridge forms the right sky line of the peak.

This was the route used to make the first ascent of Cholatse by John Roskelley, Vern Cleenger, Bill O'Conner and Galen Rowell in 1982. Climbing in the pre-monsoon conditions they found many pitches of steep ice and difficult climbing. When an American/Canadian/Argentinian expedition repeated the climb in October of 1993 most of the ice was covered, and the climb was largely a steep snow climb with an icy crux to reach the summit plateau. More recent expeditions in 2004 and 2005 have found that ice in the bottom portion of the ridge has melted out leaving somewhat scary rockclimbing.

Getting There

John climaco high on the South West RidgeJohn Climaco climbing steep ground near the summit plateau on Cholatse's South West Ridge. Photo by Andrew Brash.
The best base camp for this route is found in a beautiful meadow at 4750 meters in the valley below the peak's West Face. In the following descriptions, because of variation, I have used spellings from the excellent Khumbu Himal 1:50,000 map. This description does largely repeat that on the main peak page.

Day 1: Fly to Lukla, walk up the Dudh Kosi gorge for a few hours that afternoon. One observation we found was not to filter the river water as the silt quickly clogs the filter. Use water from a clearer tributary instead.

Day 2: Continue up the gorge, crossing the river a couple times. Eventually, climb a steep hill with the first possible views to Mt. Everest. Finish the day in Namche Bazar.

Days 3 and 4: Acclimate in Namche. There are some spectacular early morning views of Mt. Everest from the slopes surrounding town. Often by mid morning mists obscure the views, though. Check out the ridge on Tramserku. It's never been climbed to my knowledge.

Day 5: Leave Namche on the trail to Mt. Everest. Near the town of Khumjung, take the trail that climbs steeply up and over a 3973 meter shoulder of Khumbui Yul Lha then descends steeply to the small hamlet of Phortse Drangka. There are spectacular views of Ama Dablam this day if the weather is clear.

Day 6: Climb steeply up and out of the trees and lush fields into the higher alpine zone around Dole. Be sure to look back a couple times to the incredible peaks around you! Continue along a more level path to Machhermo to spend the night. Legend has it that in the early 1970's, yeti came down into this town and attacked a couple yak, so be on the lookout for this elusive creature. There are also spectacular views of Kyajo Ri on the west side of the valley and the first views of Cholatse to the east side if the weather is clear.

Day 7: Continue up the valley, but instead of going toward Gokyo, take a spur path across the river to Na. From here, work up first trails then open slopes to reach the base camp in the flat fields of the valley above Ganglha. The base camp is on the left side of the valley right where an old lateral moraine dips down into the flat valley floor. This is a beautiful place with clear running water and a spectacular view of Cholatse, the surrounding peaks and a row of sharp spires on the ridge just to the north.

From here, it is recommended to acclimate for 5 - 7 days while you investigate the route on the lower glacier, etc. prior to a summit attempt.

When to Climb

Camp 3. CholatseThe 1993 Camp 3 on Cholatse. Photo by Andrew Brash.
The two seasons that the route has been climbed are in the spring (April or so) before the monsoon and in the fall (October) after the monsoon. Reports from the pre-monsoon climbs indicate that much of the snow is scoured off of the ridge leaving difficult mixed and ice climbing. In post monsoon conditions, most of the ice is covered and the vast majority of the climb is on steep snow.

Route Description

Surrounding peaks from Gokyo...Cholatse is the peak on the left. The first difficulty in the route is the distinct small icefall near the start of the glacier. Many parties have found that by working right you can find a strip of less fractured ice at the extreme edge of the glacier. This is visible in this picture taken by William Marler. Eventually you will be forced back towards the left into the topmost part of the cwm. Climb the steep wall to the obvious saddle. From here, ascend the steep tower (now lots of rockclimbing) past a small notch and up the narrow ridge forming the right edge to the peak in this view. The angle and climbing eases at about 6000 meters.
From the base camp at the beautiful meadow, walk up the pleasant lateral moraine rising directly behing the camp until it merges with the steeper hillside behind. Stay to the left of the newer, looser and larger moraine dominating the foreground view above base camp. The slope on the left is firm with good footing and not too steep. Once you reach a height near the top of the more recent moraine, you can traverse right, eventually reaching a point that you can look across at the glacier. There is a possible campsite here, but you are somewhat exposed to avalanches coming off of the West Face.

Passing through the icefall in 2004Detail of the current route through the ice fall. Photo Greg Sievers.
The West Face of Cholatse has had many large avalanches scour it so when we ascended the icefall at the base of the glacier in 1993 we stayed on the right side away from the face. However, due to glacial melting, the route has been forced to initially climb near the face, then work across to the right side of the glacial valley. Once beyond the initial icefall, continue up the right side of the valley until crevasses and ice walls may make it necessary to cut back left under Cholatse's West Face. As the glacier continues to shrink in size, it is likely that the lower portion of this route will become a rock climb.

From the head of the glacial valley, climb the spectacular fluted snow wall before you. This might involve considerable groveling. The wall is about 200 meters in height and brings you to a beautiful saddle between Pt. 5706 and the peak of Cholatse. This makes an outstanding campsite.

Climbing the rock faceClimbing the tower's rock face. Photo by Greg Sievers.
South West Ridge of CholatseThe South West Ridge of Cholatse viewed from the top of the rock tower. Photo by Greg Sievers.
Turn left (northeast) and climb the tower before you. Once this was covered in snow and ice right to the highest rocks. However, reports from recent expeditions indicate that about half of the height of this tower is now a rockclimb. Greg Sievers reports that the rock is a poorly protected with downfacing flakes and seams that would rate about 5.8 R in rock shoes. When he was there in 2004, there were two old fixed ropes of doubtful quality hanging down the face. He recalled that they needed a .5 Camalot and a pin on the pitch and rebuilt the anchors at the top, but that they didn't trust weighting the fixed ropes during the ascent. Once at the top of the tower, it is a scramble along the ridge for a bit, then a drop down into a small notch. This notch provided a campsite for both the 1982 and 1993 ascents.

The next 3-400 meters from this notch to the summit plateau constitute the snow/ice climbing crux of the route. The climb generally follows the right side of the steep ridge and involves steep ice and snow climbing with a constant trending to the right. This slope picks up a lot of sun and the snow tends to get quite rotten. For this reason, it has twice been climbed during the night to take advantage of firmer conditions. The final headwall before the summit plateau approaches 70 degrees or so and can be ascended by a rising traverse to the right, then a cut back left to gentler ground. A couple more pitches up less steep terrain bring you to a level spot that was used as a high camp in 1993. It is an incredibly spectacular spot, but does have some vertical ice walls above that could provide some risk. From the level spot climb up steeply then right to a more gentle slope. Follow this up to the final summit ridge of the mountain. As the summit is approached, there are large towers of ice that have to be weaved through, some with short steep walls to climb. The final summit ridge grows increasingly steep until the summit is a small pedestal surrounded by huge drops. It is the fairytale summit that we all dream about. In this last section of the climb, the view opens up with Cho Oyu, Gyachung Kang, Pumori, Everest, Lotse, Makalu, Ama Dablam and many other peaks surrounding you.

Andrew Brash on the Southwest RidgeThe Crux Pitch, 1993.
Climbing the SW Ridge of CholatseClimbing the South West Ridge, 1993
Descent is made by the route of ascent. There are several short walls within the summit plateau area that may need to be rappelled. The ridge itself involves at least ten rappels many of which will be from bollards, deadman pickets, etc. Further rappels are needed back down onto the glacier and through the final section of the icefall.

Essential Gear

Nearing Cholatse s summit On the false summit of Cholatse. Photo taken by Andrew Brash.
This is a serious peak involving snow, ice and rock climbing at altitude.
You will want the usual high altitude camping gear:
-four season tent a small footprint comes in handy.
-stove and fuel canisters - stoves that hang are a good idea since the ridge is narrow. There is no water other than melted snow once you are on the mountain.
-very warm sleeping bag -30 degrees C or warmer
-pee bottle (again the ridge is narrow but be careful not to drink from it)
-water bottles and cook kit.
-warm clothing: bring what you're comfortable climbing with in cold conditions. I had about five layers including a shell, a mountaineering pants and bib, fleece, a down jacket, balaclava etc. and was not too warm high on the mountain.
-headlamp(s) with spare batteries. Both in 1993 and 2005 the steepest part of the ridge was climbed at night to get better snow conditions.
-An alpine rack including pitons. The rockclimbing has become more extensive in the past decade so I can't say exactly what is needed at this point.
-a number of ice screws. You will need more in the spring and fewer if you do the climb in October.
-multiple snow pickets. We probably left 8 - 10 deadmen pickets in descending the mountain as well as some screws and v-threads.
-considerable extra webbing for descent anchors
-knife to cut the webbing
-at least a week's worth of food to eat while on the mountain plus food for base camp, etc.
-ice tools
-ropes. We fixed over several crevasses and then the headwall leading up to the col and a couple ropes on the tower above.
-at least 2 pairs of glacier glasses
-cameras, etc.
If you're attempting this mountain, you know what to bring. . .

External Links

Tawoche from SW Ridge of Cholatse
Ama Dablam from CholatseAma Dablam from the South West Ridge of Cholatse. Photo by Greg Sievers.
An account of the first ascent of Cholatse is in the American Alpine Journal, 1983, pgs. 15 - 21 and is written by Galen Rowell. Most of the article can be found here.

Andrew Brash wrote a description of the 1993 ascent of the South West Ridge in the 1994 Canadian Alpine Journal, Pgs. 118 - 120.

John Climaco wrote a brief description (with a fabulous photo) of our 1993 ascent of the mountain in the 1994 American Alpine Journal and Andrew Brash added his comments on this web page.

A brief description of the 2005 ascent of the SW Ridge including a route photo can be found here.

Movie of Cholatse Ascent
The 2005 expedition to the S.W. Ridge of Cholatse made an outstanding movie, Light of the Himalaya, of both their climb of Cholatse and work by the team to fix cataracts in the Nepalese people. The film has won multiple awards and shows detailed pictures of the South West Ridge Route to the summit of the Peak. It can be purchased here for about $30. Sixty percent of the cost goes directly into the foundation that works on curing cataracts. By buying this movie you will be donating enough money to more than cure a person from blindness.


I would like to thank Andrew Brash for providing me with numerous pictures from the 1993 ascent of the route. The page would not have these wonderful images without his generosity. Thank you also, William Marler for allowing use of your panarama of the peak. It provides a great view of the peak as a whole. Finally, thanks Greg Sievers for your insight into the current state of the route and the pictures that you provided for the site.


Additions and CorrectionsPost an Addition or Correction

Viewing: 1-1 of 1

dmiki - Nov 27, 2010 6:37 am - Voted 10/10

broken link + further info

The 1983 American Alpine Journal (the 1982 ascent): The 1994 American Alpine Journal (the 1993 ascent):

Viewing: 1-1 of 1



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