Page Type Page Type: Mountain/Rock
Location Lat/Lon: 32.064°S / 70.166°W
Activities Activities: Mountaineering
Seasons Season: Spring, Summer
Additional Information Elevation: 20341 ft / 6200 m
Sign the Climber's Log



The Cerro La Mesa massif is second only to Mercedario in sheer size and mass. Situated at the head of the Valle del Colorado, La Mesa forms the majority of the 6,000m+ South running ridge linking Alma Negra, La Mesa, Polaco and Mercedario.

La Mesa (the table) is named for its characteristic flat and long summit ridge and large plateau’s of snow, she has six summits, the highest being the Northern summit at 6,200m. La Mesa is also host to the largest concentration of glaciers within the Cordillera de la Ramada which spill down its Southern and Eastern Flanks.

First climbed in 1934 by the visiting team of Poles who made numerous first ascents in the Cordillera, it is unclear if they reached the highest point of La Mesa as cloud and fog obscured their view.

Whilst no official record is kept regarding the number of ascents it is safe to assume these to be less than 50 by all routes. By far the most popular route is that shared with the non technical peak of Alma Negra before traversing to the Northern summit.

The only other known route upon La Mesa is that by the Italian glacier, the largest glacier of the Cordillera. The route involves following along side the glacier with some sections of scrambling/climbing over poor quality rock to avoid some dangerous seracs.

La Mesa, and the entire Cordillera de la Ramada provide rare opportunity for opening new and variant routes.

History Of The Region

In 1934 a team of visiting Polish climbers consisting of J. Narkienwicz-Jodko, J. Dorawsky, S. Daszynski, A. Karpinski, S. Osiecki and V. Ostrowski explored the Cordon del Ramada and made a number of successful first ascents within the Cordillera including Mercedario via the North Face*, Cerro Ramada 6,400m, Cerro Alma Negra 6,120m and Cerro La Mesa 6,200m.

The Poles reached what they believed to be the summit in heavy fog and cloud cover and were unable to verify if they in fact had gained the highest point of the La Mesa’s summit ridge.

The poles also attempted a striking dual conned summit peak (Pico Polaco) located along the ridge joining La Mesa and Mercedario’s West wall however after the loss of one of their party in an accident, they were forced to abandon the climb.

The peak was to remain unclimbed until 1958 when, after an attempt upon the South ridge the previous year by Argentine climbers Sergio Fernandez and Oscar Kûmmel was abandoned and the route deemed too hard, the team regrouped and focused their efforts upon the North East ridge, with A. Beorchia and E. Yacante successfully gaining the summit via a long and steep icy couloir.

At the time this peak was unnamed and not represented upon maps, the peak was to later be renamed after the Poles in honour of their achievements within the Cordillera and has only recently been shown upon local maps. Many of the glaciers within the Cordillera have been named after the Poles including those of Mercedario’s South Face being the Ostrowski and Karpinski Glaciers.

*Inca ruins and artefacts have been found high upon Mercedario in recent years.

Getting There

Fly to Mendoza Argentina.

There is an issue if you go through customs at Santiago airport there is a good chance that you will have all meat and dairy products from your expedition food confiscated upon entering Chile. Stay in transit and take a short (45 min) flight on Lan Chile or Aerolinas Argentina to Mendoza, Argentina. This will allow you to keep your food, get your permits, possibly see Aconcagua from the air as they fly close to it at times, and save the 100$ U.S. tax Chile imposes on all Americans, Canadians, (and others). Chile has made things difficult for climbers (particularly those on a budget) with this tax and with the food issue.

It is recomended to fly to Mendoza as direct as possible.

For flights try.
Aerolineas Argentinas - USA - Home Page
United Airlines
American Airlines
Lan Chile
Air Canada

Take a local bus from Mendoza to Barreal. (about 4 hours) Stay at the main hotel The Hotel Barreal or Posada San Migual (sorry for the spelling). Very old house with courtyard but very cosy pleasent but sometimes nonexistant owners. Arrange mules either with the help of the hotel staff of the military whose base is located just up the street. Its about 4 hours by truck on an extremely dangerous road. Hire a good driver who has done this route before. Make sure that the truck or four wheel drive can handle the rough terrain to the drop off point which is an abandoned mining camp by the side of the Rio Blanco. Arrange for a pick up and make sure you are there on time. Otherwise they will not wait for you on your return. Some helpful people can be found at the Andismar bus company in Mendoza. Claudia Yanzon is who to ask for. She can speak English and has connections in Barreal with those who deal with climbers.

Information from Uwe Krause
Hotel Barreal
Contact: Ramón Gerónimo One double room were 30 US$, this means 15 US$ per person. It was not bad. But it was before the finance crisis. Uwe got his mules via Anibal Maturano Mercedario trips and mules
- but you can ask for Renzo Herrera in Barreal. He lives close to a small museum. But there should be also other people with mules. One mule to Valle del Colorado cost 160 US$.

From San Juan.
You will need to transfer to the town of Barreal, about 6 hours drive from San Juan city. If you plan to drive this route yourself you will need to further research conditions and road closures at the time. As at December 2004 roads are closed for 10 hours per day as construction of a new resevoir is underway utilizing explosives and heavy machinery. The road is one-way in many places and you will be directed to wait for upto 30mins for traffic to pass in some sections. That said, the drive is amazing, the road passes through a long and very beautiful valley with sheer drops of 300m upwards and no gaurd rails.

Fom Barreal you will need to organise a 4WD transfer to the Gendarme post at Santa Ana, just before you cross the bridge leading to the village of Santa Ana you will be stopped and asked to show your permit to utilize the road and requested to sign a waiver of liability. In most cases there should not be a problem and after formalities you can continue unimpeded to Santa Ana.

Note: The Gendarme post at Santa Ana is without either Radio or Telephone communications with the outside.

The Trek To Base Camp
From Santa Ana you take a trail on the right hand side of the house which continues down to the first river crossing, cross the river and continue over dry river bed for approx 1 hour where you will reach a disused hut. Continue on into the Valle del Colorado, after about 1 hour you will reach the first rock towers that line the valley and form a canyon, follow the trail through the canyon, a couple of hours later you reach a large rock fall area, continue for another hour or two and you will eject onto a grassy area with a boulder field in the top left (south) corner, this is the first nights camp. (8+ hours)

From camp continue up the valley, you should be able to see the summit of Cerro La Mesa, followed shortly thereafter by Pico Polaco and as you round the final corner, the South Face of Mercedario. Base camp is situated amongst a boulder field on the left hand side (south) approx 300m past the prominent grassy area.

The water from the Rio Colorado is safe to drink unpurified, however the water tends to silt up quite bad in the afternoons. Please respect this base camp and take out or burn all trash. The entire area is well kept with low visibility of human impact, lets keep it that way..

Red Tape

Whilst permits are not required to climb within the Cordillera Ramada, you will be asked to complete a waiver of liability in order to use the mining company's road and bridge. It is recommended to use the services of San Juan Aventura for arranging access and other logistical requirments.

Solo climbing and trekking access to the region is not permitted.

When To Climb

The general rule for the area:

Glacier / Snow Climbs
November through to January is best for these routes

Scree Scramble / Trekking Routes
November through to March, such routes could be attempted in winter however heavy snow fall could bring a whole range of new objective hazards.



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Mercedario GroupMountains & Rocks