Argentina · Mendoza Province · San Rafael

Cañón del Atuel

Atuel Canyon · Hydraulic Canyon · Andean Precordillera

Mendoza Natural Wonder Five Linked Reservoirs RP173 Canyon Scenic Drive

📍 RP173, Cañón del Atuel, San Rafael, Mendoza, Argentina

📞 Visitor info: San Rafael Tourism

🏛️ Natural Wonder · Canyon & Reservoirs

Explore the Canyon

Plan Your Visit View on Google Maps

4.8

★ ★ ★ ★ ★

7,171 reviews · Google Reviews

How is Cañón del Atuel different from other Mendoza canyons?

Mendoza Province is famous for its Precordillera canyons and reservoirs. When planning a trip, the three easiest to confuse are Cañón del Atuel, Potrerillos (Cañón del Río Mendoza) near Mendoza city, and the Uspallata valley on the way to Aconcagua. They differ in landscape and experience.

Destination	Region	Landscape Type	Core Experience	Best For
Cañón del Atuel	San Rafael	Deep gorge + five linked reservoirs	RP173 scenic drive, rafting, zip-line	Road-trippers, adventurers and photographers
Potrerillos Canyon	Near Mendoza city	Single reservoir (Embalse Potrerillos) + gorge	Half-day rafting, climbing, lakeside leisure	Half-day visitors from Mendoza city
Uspallata Valley	Andean pass, west Mendoza	High-altitude valley with Inca sites	Scenic drive, stopover to Aconcagua	Cross-border drivers and high-mountain travellers

Cañón del Atuel

Page Focus

Region: San Rafael

Landscape Type: Deep gorge + five linked reservoirs

Core Experience: RP173 scenic drive, rafting, zip-line

Best For: Road-trippers, adventurers and photographers

Potrerillos Canyon

Region: Near Mendoza city

Landscape Type: Single reservoir (Embalse Potrerillos) + gorge

Core Experience: Half-day rafting, climbing, lakeside leisure

Best For: Half-day visitors from Mendoza city

Uspallata Valley

Region: Andean pass, west Mendoza

Landscape Type: High-altitude valley with Inca sites

Core Experience: Scenic drive, stopover to Aconcagua

Best For: Cross-border drivers and high-mountain travellers

This page focuses on Cañón del Atuel south of San Rafael, known for its five linked reservoirs, the cliff-edge RP173 scenic drive and Atuel river rafting: Mendoza’s most distinctive hydraulic canyon.

A Rift in the Andean Foothills

Cañón del Atuel is one of Mendoza Province’s most stunning natural and engineered landscapes, set in the Precordillera of the Andes south of San Rafael. The Atuel River plunges down from the snowy Andes and has carved a deep canyon through arid, red rock — then been chained by a series of reservoirs that turn turquoise lakes and ochre cliffs into a single, unforgettable panorama. How the Canyon Was Born The Atuel River rises in the Andes of south-west Mendoza and runs about 185 km. For millions of years it has incised along geological faults, cutting ancient sedimentary and volcanic rock into a profound gorge. At its narrowest, only a sliver of sky shows; the walls display layered hues of red, orange and grey. Taming the Water: the Legend of Five Reservoirs From the mid-20th century, Mendoza began building five cascading reservoirs (embalses) — Agua del Toro, Los Reyunos, Valle Grande, Tierras Blancas and El Nihuil — to generate hydropower and irrigate the land. The river was cut section by section, and in the middle of the desert canyon appeared five turquoise lakes, making this one of Argentina’s most remarkable hydraulic landscapes and the source of power and life for the San Rafael oasis. Mendoza's "Water Bank" Today the Atuel basin supplies a significant share of Mendoza’s electricity and irrigation water. The reservoir chain is both a lifeline for energy and agriculture and the stage for rafting, zip-lines and lakeside leisure — a rare symbiosis of natural force and human engineering.

Name, People & Legends

The name Atuel comes from the Huarpe (Allentiac) language of the region’s original inhabitants, evoking water that shoots down like an arrow. Between the canyon and its reservoirs, stories of this land still live on.

The Huarpe were among the oldest peoples of Mendoza, living along rivers and lakes and naming nature with simple, poetic words. In Huarpe, Atuel is read as water that bursts forth like an arrow — a perfect description of the Atuel River’s rush through the gorge. The San Rafael oasis of today flourishes precisely because of this river.

Although Huarpe culture was severely disrupted during the colonial period, their place-names and reverence for water survive in Mendoza’s geographic memory. As you walk beside a reservoir, remember: this turquoise water was once a sacred, rushing stream in Indigenous eyes.

Unlike many natural wonders, the modern legend of Cañón del Atuel is human. From the 1940s, Mendoza’s engineers and workers dammed the river, turning the wild Atuel into a string of gentle lakes. Older residents of San Rafael still recall that when the reservoirs were completed, the barren canyon first mirrored a turquoise reflection, and the oasis lit up with hydroelectric power.

This history of taming the water makes Cañón del Atuel a vivid lesson in how humans reshape — and coexist with — nature: a reminder that here, half the beauty is from the earth, and half from human hands.

In the oral tradition of Mendoza’s countryside, the canyon and reservoirs are not entirely silent. One story says that when the wind brushes the reservoir surface and a low hum echoes through the rocks, it is the spirit of the water reminding people to respect this river of life. Elders also warn against entering the gorge rapids after heavy rain, for the swollen river holds formidable power.

These simple tales, continuous with the Huarpe reverence for water, form the soft yet clear human undertone of Cañón del Atuel.

Nature & Engineering Trivia

Five Lakes in a Row From upstream to downstream, five reservoirs string together like pearls: Agua del Toro, Los Reyunos, Valle Grande, Tierras Blancas and El Nihuil. Seen from above, turquoise water winds through the ochre canyon — Mendoza’s most striking hydraulic painting. El Laberinto (The Labyrinth) Near the Valle Grande reservoir, wind and water have sculpted a field of bizarre red rock pillars, aptly called the Labyrinth. Wandering among them feels like stepping into nature’s sculpture park. RP173: a Scenic Road on the Cliff The RP173 provincial road linking San Rafael to the canyon hugs the canyon wall as it winds along. With a deep ravine on one side and cliffs on the other, and several miradores (viewpoints) along the way, it is considered one of Mendoza’s most thrilling yet beautiful drives. Condor Airspace The updrafts above the canyon are a natural glider runway for the Andean condor (cóndor). On lucky afternoons you may see this nearly three-metre-winged giant glide in silence.

From River Incision to Cascading Reservoirs: A Short Timeline

If Cañón del Atuel is seen only as a driving destination, its longer formation story disappears. This timeline reconnects geology, water and human activity on one line.

Millions of years ago

Sedimentary and volcanic bedrock

Ancient sedimentary and volcanic rock accumulated in the Precordillera, forming the bedrock later cut by the river.

Andean uplift

Relief rises and faults develop

The Andes raised the regional relief and drainage gradient, and the Atuel River incised along the faults.

Since the Holocene

The river carves the canyon

In its rhythm of dry-season trickles and rainy-season floods, the Atuel cut the rock into today’s deep ochre gorge.

Mid-20th century

Five cascading reservoirs built

For power and irrigation, five reservoirs were built — Agua del Toro, Los Reyunos, Valle Grande, Tierras Blancas and El Nihuil — shaping the linked turquoise landscape.

Today

Conservation alongside tourism

The canyon is a hub for rafting, zip-lines and scenic drives, while protected as a sensitive ecosystem sustaining Mendoza’s water and power.

Geology & Hydraulic Works

Cañón del Atuel is a double masterpiece of natural force and engineering wisdom. Its unique landforms are valuable for both appreciation and research, and tell the story of how humans harness Andean water.

How the Canyon Formed

The Atuel River incises along faults in the Andean Precordillera, forming a classic deep gorge (garganta). Dozens of kilometres long with towering walls, it narrows in places to barely allow two vehicles. The riverbed surges in the rainy season and trickles in the dry — relentless incision over millions of years shaped today’s deep cleft. The canyon walls are mostly ancient sedimentary and volcanic rock, recording the long history of Andean orogeny. Erosion is especially strong where rock is softer, producing step-like cliffs and potholes.

Rock Layers & Colours

The cliffs are an open geological textbook: red, orange and grey bands from minerals deposited in different eras — iron oxide gives the red, calcium carbonate the pale stripes. Under the low-angle morning and evening sun, the colours are most intense, contrasting sharply with the turquoise lake — a favourite subject for photographers.

Hydrology & Reservoirs

The Atuel has limited annual runoff with strong seasonal swings. To regulate flow, generate power and irrigate, Mendoza built five cascading reservoirs, storing flood-season water for both flood control and energy. The reservoir chain tamed the wild river into something gentle and controllable, creating a unique hydraulic canyon: bare rock next to blue water, wilderness next to oasis.

Key Facts

Name

Cañón del Atuel

Location

South of San Rafael, Mendoza, Argentina

River

Río Atuel (≈185 km)

Reservoirs

5 cascading dams (Agua del Toro–El Nihuil)

Type

Deep gorge / Hydraulic landscape / Outdoor paradise

Gateway town

San Rafael

What to Experience at Cañón del Atuel

Cañón del Atuel blends canyon sightseeing, water sports and Precordillera scenery. The experiences below are loved by adventurers, photographers and families alike.

White-water Rafting & Kayaking

The Atuel is one of Mendoza’s most famous rafting rivers. Trips from San Rafael run through rapids and calm stretches beneath towering canyon walls — a double feast of adrenaline and scenery. Kayakers can also enjoy the gentler reservoir sections amid lake and mountain views.

Zip-line & Aerial Adventure

Canopy (zip-line) and high-rope courses near the canyon let visitors skim above the ochre cliffs and blue lakes from a bird’s-eye view. A popular choice for families and teams, with safety gear provided by professional operators.

RP173 Drive & Viewpoints

Driving the RP173 is the classic way to experience the canyon. The road winds along the cliff edge with several miradores (viewpoints) to stop and gaze over reservoirs and the rock labyrinth — a paradise for photographers and sunset lovers.

Hiking, Cycling & Photography

Several hiking and mountain-bike trails of varying difficulty surround the canyon. Whether capturing the texture of red rock, waiting for a condor to glide, or watching morning mist lift off the reservoir, the canyon rewards slow travel.

Ecological Conservation

Reading Notes

How to read this page

This page focuses on Cañón del Atuel south of San Rafael — a landscape written jointly by natural incision and 20th-century hydraulic engineering. We summarise geological context, practical transport and safety notes to help you plan with clear expectations.

Dual landscape: read the canyon within the framework of "natural force + human engineering" — bare rock next to blue water

Local terms: short explanations for RP173, mirador (viewpoint), embalse (reservoir)

Safety and responsibility: driving tips, water safety, sun protection and leave-no-trace notes

Cañón del Atuel is both a natural heritage and a sensitive ecosystem that sustains Mendoza’s water and power. As an independent non-profit educational guide, we advocate visiting this land in the most responsible way.

Stay on the road: drive only on designated routes and viewpoints; avoid crushing fragile desert vegetation
Leave no trace: take all rubbish with you, including biodegradable items like peels and tissues
Protect the water: reservoirs are sources of drinking and irrigation water — do not discard anything or wash in the lakes
Respect wildlife: do not feed or disturb condors, guanacos and other wild animals
Water safety: canyon rapids swell after rain — keep clear of flooded stretches
Support locals: prefer local guides and community-run tourism projects

Bare Rock & Blue Water: Two Faces of the Canyon

What moves visitors most about Cañón del Atuel is the contrast between nature’s hardness and engineerings softness. On one side, ochre bare rock cut over millions of years; on the other, a river-dammed, jade-like turquoise reservoir. Two images that capture the canyon’s dual character.

Bare Rock Canyon

Turquoise Reservoir

Plan Your Visit

Cañón del Atuel can be visited year-round. A half-day along RP173 or a full day combining reservoirs and San Rafael is recommended. The following helps you plan with ease.

Opening Hours

The canyon scenic road (RP173) is open all day. Reservoir and outdoor activities (rafting, boat rental, zip-line, etc.) generally run 09:00–18:00. Mornings or late afternoons offer the best light and pleasant temperatures.

Some sections may close temporarily in extreme weather or during reservoir maintenance; check the latest info from San Rafael Tourism before departure.

Fees

The canyon road and viewpoints are free to access. Rafting, kayaking, zip-line and boat rental are charged separately — prices are set by operators on site. Some activities include a professional guide and safety gear.

Carry cash (Argentine pesos); card payments may not be accepted in remote areas.

Suggested Duration

RP173 sightseeing + main viewpoints: about 4–5 hours. Combining reservoir activities with San Rafael wineries: allow a full day.

Combine with Mendoza’s Ruta del Vino or Puente del Inca for a 2–3 day Andean trip.

☀️

Strong Sun

Intense, dry foothill sun — sunglasses, wide-brim hat and high-SPF sunscreen are essential.

🚗

Winding Roads

RP173 hugs cliffs with many curves — slow down, avoid fatigue and night driving.

💧

Hydration

Semi-desert air dehydrates quickly — carry at least 1.5 L of water per person.

🛟

Water Safety

Life jackets required for rafting/kayaking; never enter swollen water after rain.

Travel Tips & Notes

Sun & wind protection: strong foothill sun and afternoon winds — bring high-SPF sunscreen, sunglasses and a jacket
Careful driving: RP173 has many curves and cliff-edge sections; control speed and avoid night driving
Water safety: always wear a life jacket for rafting; never enter swollen water after rain
Stay hydrated: semi-desert climate is dry; carry at least 1.5 L of water per person daily
Respect managed areas: reservoirs and some stretches involve managed facilities — follow signs and guides
Plan ahead: book rafting etc. in advance and confirm weather and water levels

Getting There

✈️ From Mendoza / the Airport

The nearest major international airport is Mendoza (Aeropuerto Internacional de Mendoza, MDZ), about 240 km from San Rafael. San Rafael also has a regional airport (Aeropuerto de San Rafael) with a few domestic flights.

Self-drive / Rental (Recommended)

approx. 3.5–4 hrs 240 km

• From Mendoza airport head south to San Rafael via RN-40 or RN-143

• In San Rafael, follow signs onto RP173 towards the canyon

• Drive ~40 km along RP173 past the reservoirs and viewpoints

Long-distance bus + local transfer

approx. 4–5 hrs MDZ → San Rafael

• Take a bus from Mendoza terminal to San Rafael (Terminal de San Rafael)

• On arrival, book a taxi/Remís or join a local day tour to the canyon

• Drive ~40 km along RP173 to the main viewpoints

Regional flight + rental

depends on flight to San Rafael

• Fly domestically to San Rafael regional airport

• Rent a car or book a transfer at the airport

• Self-drive or transfer along RP173 to the canyon

🚌 Long-distance bus / Public transport

Visitors without a car usually reach San Rafael first, then transfer for the final ~40 km to the canyon. Schedules are subject to terminal notice.

Mendoza → San Rafael (bus)

A regular line from the provincial capital to San Rafael, the most common public-transport option.

• Go to Mendoza bus terminal (Terminal de Mendoza)

• Buy a ticket to San Rafael

• On arrival, take a taxi/Remís or join a local day tour

San Rafael → Canyon (last leg)

The canyon is ~40 km from San Rafael; mountain road with many curves and limited public transport.

• Book a taxi/Remís in San Rafael or join a local tour

• Follow RP173 to the reservoirs and viewpoints

• Some viewpoints allow free stopping

🏘️ From San Rafael

Cañón del Atuel lies about 40 km south of San Rafael along RP173. The easiest options are self-drive, private transfer, or a local operator’s day tour.

• From central San Rafael follow signs onto RP173

• Drive ~40 km past Valle Grande, El Nihuil and other reservoirs

• Stop at the miradores (viewpoints) to explore

Transport & Driving Tips

Gateway town: San Rafael is the base for the canyon, with full supplies and lodging
Mendoza city is ~240 km from the canyon — budget half a day of driving
RP173 is paved but curvy; watch for rockfall and slipperiness in the rainy season
Combine with San Rafael’s Ruta del Vino (wine route) for a day trip
Fuel up in San Rafael — fill the tank before entering the mountains

Photo Gallery

View More Photos on Google Maps

Visitor Reviews & Nearby Exploration

Voices from Cañón del Atuel: Real Google Maps Testimonies

Mariana L.

2025-06-18

★★★★★

El Cañón del Atuel es impresionante. La ruta RP173 pegada al acantilado es de película, y los embalses turquesa en medio del desierto rojo no tienen comparación. Llegamos en auto desde San Rafael y cada mirador valía la pena.

Google

James P.

2025-05-22

★★★★★

Una de las excursiones más bellas de Mendoza. Hicimos rafting en el Atuel y luego recorrimos los embalses. La combinación de aventura y paisaje es perfecta. Llevar mucha agua y protector solar, el sol pega fuerte.

Google

Giulia R.

2025-04-30

★★★★★

Canyon magnifico e poco turistico. Il contrasto tra roccia ocra e laghi turchesa è stupendo. Consiglio di guidare con calma la RP173 e fermarsi in tutti i miradores. Indimenticabile!

Google

陈

陈静

2025-03-15

★★★★★

阿图埃尔峡谷太震撼了！赭红色岩壁和碧蓝水库的对比像油画一样。RP173 公路自驾很刺激，沿途观景台很多。建议清晨出发，光线和温度都最舒服。

Google

Sophie M.

2025-02-08

★★★★☆

Absolutely stunning drive through the canyon with the reservoirs winding between red cliffs. We only had a half day so we missed El Laberinto. Next time we will stay longer. Fuel up in San Rafael first.

Google

Diego F.

2024-11-12

★★★★★

Cada vez que vuelvo a San Rafael, el Atuel me sorprende. Los cinco embalses en cascata son una obra de la naturaleza y el hombre. Ideal para familias, rafting y fotos. Imperdible en Mendoza.

Google

Nearby Attractions Worth Visiting

After exploring Cañón del Atuel, you can easily visit the following nearby destinations:

📍 El Nihuil Reservoir

One of the downstream Atuel reservoirs, with open, calm water — popular for sailing, water-skiing and lakeside camping, about an hour from San Rafael.

📍 San Rafael Wine Route (Ruta del Vino)

San Rafael is a key Mendoza wine region, famous for Malbec and Torrontés. After the canyon, taste and dine at nearby wineries.

📍 Cañón del Río Mendoza (Potrerillos)

Another famous canyon and reservoir (Embalse Potrerillos) near Mendoza city, also known for rafting and climbing — a great contrast to Cañón del Atuel.

View More Reviews on Google Maps

Frequently Asked Questions

Learn More About Cañón del Atuel

Cañón del Atuel is about 40 km south of San Rafael, Mendoza Province, reached via RP173. The easiest way is to drive or take a bus from Mendoza city (~240 km) to San Rafael, then a private transfer or day tour to the canyon.

Sightseeing along RP173 with the main viewpoints takes about 4–5 hours; with rafting, zip-line or San Rafael wineries, plan a full day. The canyon road is open all day; water activities generally run 09:00–18:00.

Very much so. Viewpoints and reservoir areas are easy and safe for families and photography; rafting and zip-line provide professional safety gear but choose difficulty by the child’s age. Supervise children and keep clear of swollen water.

The five Atuel reservoirs (Agua del Toro, Los Reyunos, Valle Grande, Tierras Blancas, El Nihuil) are artificial hydraulic works built from the mid-20th century for power and irrigation. They reshaped the wild river into today’s linked turquoise lakes — a joint work of nature and engineering.

RP173 is a scenic road hugging the canyon wall with many curves and some cliff-edge sections. Control your speed, avoid night driving, fill the tank before entering, and watch for rockfall and sudden strong winds in the rainy season. Download offline maps as mobile signal is weak in the canyon.

Map Location

RP173, Cañón del Atuel San Rafael, Mendoza Province Argentina

View on Google Maps

Canyon Trail Map

Hover over (or tap) the markers on the map below to explore the key areas of Cañón del Atuel.

Hover to preview · Tap to pin

Suggested Itinerary

A half-day captures the essence of Cañón del Atuel; a full day allows deeper exploration. Use the timeline below as a reference.