Crossing the Andes by trekking through

Patos Sur Valley

Calingasta - San Juan - Argentina

Embark on the legendary trail of General José de San Martín, the hero who led the battle of Chacabuco and paved the way for the recovery of Chile 's independence. Follow in the footsteps of the liberator and discover the historic path that shaped a nation’s destiny.



What makes this experience so memorable?

• Meeting Point in Barreal:
Welcome to Barreal, the starting point of our adventure! Meet your fellow expedition members in this charming town nestled at 1700 meters above sea level. Check in at the mountain hostel and get ready for the journey ahead. We will take care of equipment preparation and logistics, and then gather for a warm welcome dinner to kick off our exciting expedition! ..


• Day 1:
Breakfast and check out at the mountain hostel. Transfer in 4×4 vans from Barreal to Los Manantiales (3200 masl). Beginning of trekking from Manantiales to Hornitos Superior (3100 masl). Lodging in camp. Dinner and rest. Trekking of 6/7 hours.


• Day 2:
Breakfast and start of the trekking. Ascent of the slope until reaching the highest point of the expedition, El Espinacito (4500 masl). Arrival to Ciénaga de Gallardo (3000 masl). Lodging in camp. Dinner and rest. Trekking of 8 hours.


El Espinacito summit holds a special significance, as it is where the Liberator Army led by General San Martín crossed the Andes in 1817. Commemorative plaques honor the Vanguard Division (Brigadier Soler), Thick Division (Brigadier O’Higgins), and Rearguard (General San Martín) as they bravely traversed this challenging terrain.


• Day 3:
Breakfast and start trekking to Los Patos Sur Valley (3100 masl). This valley is an ancient glacier deposit characterized by the beauty of its landscapes, native flora and fauna. Overnight in camp. Dinner and rest. Trekking of 6 hours.


Los Patos Sur Valley was a strategic haven for the Andes Army’s reorganization before crossing the Western Cordon of the Andes, now the border with Chile. History echoes through this valley’s majestic landscapes.


• Day 4:
Breakfast and start of the trekking to the Argentine-Chilean International Limit at the Valle Hermoso Pass (3850 masl). We will observe the North Face of Mount Aconcagua (6962 masl), with the imposing Gussfeldt Glacier. Return to the camp in Valle de Los Patos Sur, dinner and rest, this is the most demanding day but at the same time the most exciting because we will reach our goal of reaching the International Limit. Trekking of 9 hours.


General José de San Martín led the charge through Valle Hermoso Pass with Major Arcos and 200 Grenadiers to unite with Brigadier O’Higgins and Soler, and Colonel Las Heras divisions in Chile. Their mission? To triumph in the Battle of Chacabuco and secure a victory for Chile.


• Day 5:
Day of rest and recuperation in the vicinity of the Ingeniero Sardina Refuge, in the Valle de Los Patos Sur. We will be able to visit the Chilean muleteers who, for five months, graze with goats, sharing their customs and typical foods.


• Day 6:
Breakfast and start of trekking. Ascent to the Cuesta de La Honda (4300masl). Descent along the banks of Las Leñas River. Arrival to Los Hornitos Superior (3000 masl). Lodging in camp. Dinner and rest. Trekking of 8 hours.


• Day 7:
Breakfast and start of the trekking. Arrival to Los Manantiales, lunch and transfer to Barreal. Check in at the mountain hostel. Farewell dinner. Trekking of 6 hours.

Dates for season 2023/2024 (*) (**)

Dates for season 2023/2024 (*) (**)
December 22 to 28, 2023.

January 9 to 15, 2024.
January 19 to 25, 2024.
January 30 to February 5, 2024.
February 9 to 15, 2024.


(*) Dates open, while space is available.
(**) You can not and need to explore other dates? Contact us to find a convenient option for your adventure.


• Types: Trekking
• Number of days in the mountain:
7 day and 6 nights
• Group size:
4 people.
• Age range:
13-65 (activities adapted to individual needs).
• Maximum recommended age:
65 years.
• Difficulty level:
This allows us to personal improve and monitor our service.


Price per person: contact us


Guide (trained to provide first aid)
Mule packs and a saddle horse to support the walkers
Bag for individual equipment.
Two nights in a Mountain Hostel.
Six nights in the camping site in ¨Los Andes Mountain Range¨.
Special equipment for camping: tents, sleeping bags, camping mat.
Creole Menu (vegetarian, vegan and celiac menu will be considered for those who request it in advance).
Dishes and cups.
Satellite communication.
4x4 trucks.
First Aid Kit

Services Not Included:

Transfers from the place of origin to Barreal
Personal equipment
Air Evacuation Insurance.
Travel Assistance Insurance / Personal Accident Insurance
Program abandonment costs.