Group Trip to San Juan: Trekking, Astrotourism & Culture

Experiences

San Juan Trekking Tour: Arroyo Turquesa, El Leoncito and Stargazing in the Andes

High-altitude trekking, mountain camping, land sailing and one of the best stargazing skies in South America. 4 days / 3 nights in the Andean cordillera of San Juan with a professional mountain guide and permanent coordinator.

November 6–9 4 days / 3 nights Limited group size Base: San Juan city Price: ARS 1,050,000

San Juan: Argentina's Andes beyond the tourist trail

While Mendoza draws wine tourism and Bariloche handles the mass mountain market, San Juan offers something neither can: authentic Andean cordillera with no crowds, Andean wildlife, extraordinary geology, and skies ranked among the clearest on Earth.

Arroyo Turquesa is one of the most striking high-altitude treks in Argentina — reaching over 4,000 meters with direct views of the Caballito Glacier — and very few travelers know it exists. The Pampa del Leoncito has some of the lowest light pollution levels in the country, making it one of South America's premier astrotourism destinations. And the Cerro de los Siete Colores is geological storytelling at its finest, guided by a specialist geologist who reads millions of years of Earth history into every layer of rock.

Centinela Explora has been running this circuit for four seasons. It has sold out every time.

  • Next departure: November 6–9, 2026
  • Duration: 4 days / 3 nights
  • Start and end: San Juan Airport
  • Style: trekking + mountain camping + astrotourism

This journey combines high-altitude trekking, mountain camping, Andean landscapes and one of Argentina's best skies for astronomical observation. We visit Laguna Blanca, hike to Arroyo Turquesa, try land sailing on Pampa del Leoncito, and visit the CASLEO astronomical observatory.

Trekking to Arroyo Turquesa in San Juan, Argentina, with views of the Caballito Glacier
Arroyo Turquesa and the Caballito Glacier, above 4,000 meters in the San Juan Andes.

Day-by-day itinerary

  • Day 1 – Nov 6: Meeting at San Juan Airport and 4x4 drive into the Andean cordillera. Arrival at Laguna Blanca and overnight at mountain camp.
  • Day 2 – Nov 7: Trek to Arroyo Turquesa (approx. 16 km round trip) with views of the Caballito Glacier above 4,000 m. Overnight at camp.
  • Day 3 – Nov 8: Return to Barreal. Free time and land sailing on Pampa del Leoncito. Stargazing session at CASLEO observatory.
  • Day 4 – Nov 9: Geological trek (geotrekk) at Cerro de los Siete Colores with a specialist geologist. Return to San Juan and end of services.
Stargazing at CASLEO observatory, El Leoncito National Park, San Juan, Argentina
Astronomical observation at CASLEO — one of Argentina's premier stargazing sites.

Highlights

  • High-altitude trek to Arroyo Turquesa: 16 km round trip, over 4,000 m elevation, with direct views of the Caballito Glacier. One of the most striking mountain treks in Argentina.
  • Mountain camping at Laguna Blanca, in the heart of the San Juan cordillera.
  • Stargazing at CASLEO: the El Leoncito Astronomical Complex is one of Argentina's leading observatories, in one of the country's lowest light-pollution zones — over 300 clear nights per year.
  • Land sailing on Pampa del Leoncito: wind-powered three-wheeled vehicles on one of the region's most arid and expansive flatlands.
  • Geological trek at Cerro de los Siete Colores with a specialist geologist — a walk through millions of years of Earth history written in layered rock.
Laguna Blanca in the San Juan Andes, Argentina
Laguna Blanca and the immensity of the San Juan cordillera.

What's included

  • All in-destination transfers.
  • 1 night accommodation in Barreal with breakfast.
  • 2 nights mountain camping with meals.
  • Professional mountain guide and assistant.
  • Permanent trip coordinator.
  • Traveler assistance coverage.
  • Laguna Blanca and Arroyo Turquesa excursion.
  • Astronomical visit to CASLEO observatory.
  • Land sailing on Pampa del Leoncito.
  • Geological trek at Cerro de los Siete Colores.

Not included

  • Flights to San Juan.
  • Sleeping bag.
  • Services not listed above.

Price & payment

Price per person: ARS 1,050,000

Payment: interest-free installments by cash or bank transfer. Credit card options available on request.

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Frequently asked questions

No technical mountaineering experience is required, but good general fitness and comfort with multi-hour hikes are essential. The Arroyo Turquesa trek covers 16 km round trip above 4,000 meters, with altitude exposure. No climbing gear or technical skills needed — but being accustomed to walking several hours on uneven terrain is important.

The hike covers approximately 16 km round trip and reaches over 4,000 meters above sea level in the Andean cordillera of San Juan. The trail is well-marked but involves altitude exposure and wind. The destination is the Turquesa stream, with its intensely mineral-colored water and direct views of the Caballito Glacier. It's the most demanding and most spectacular day of the trip.

The activity takes place at CASLEO (Complejo Astronómico El Leoncito), one of Argentina's principal astronomical observatories, located inside El Leoncito National Park. The area has among the lowest light pollution levels in South America, with over 300 clear nights per year — making it a world-class astrotourism destination.

Land sailing (carrovelismo in Spanish) involves riding wind-powered three-wheeled vehicles across the flat, dry surface of the Pampa del Leoncito — an arid plain in the Calingasta Valley. No prior experience is required and it's suitable for anyone in reasonable physical condition.

The camping is in the mountains in expedition tents — organized and well-equipped, but not glamping. A sleeping bag is required and not included in the price (you'll need to bring your own). All meals are included and well-prepared. For travelers who haven't camped much, this is often one of the most memorable parts of the trip — sleeping under an open Andean sky at altitude is an experience that's hard to replicate elsewhere.

Spring (October–November) and autumn (March–April) offer the best conditions: comfortable valley temperatures, access to high-altitude circuits and clear skies. Winter can be very cold at elevation and summer too hot in the lower valleys. November in particular combines good mountain access with long days and clear nights ideal for stargazing.

The Andean cordillera of San Juan is home to Andean condors, guanacos, grey foxes, viscachas and a variety of high-altitude raptors and bird species. El Leoncito National Park also supports guanacos and diverse arid-scrub birdlife. For wildlife photographers and birdwatchers, San Juan offers opportunities that mainstream mountain tourism rarely includes.

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