🇵🇪 Peru · The Highlands and the Andes
The Cotahuasi Canyon is one of the deepest canyons in the world: it drops more than 3,500 meters, which puts it among the deepest on the planet and deeper still than the famous Colca. It's in the far northwest of the Arequipa region, in the province of La Unión, about 400 km from the city of Arequipa by road, which makes it a remote destination and far less crowded than its famous neighbor.
That remoteness is precisely its charm. Cotahuasi is for travelers after grand nature, authentic Andean villages and adventure, far from the crowds. The landscape combines the deep canyon carved by the Cotahuasi river with snow peaks above 6,000 meters -Coropuna and Solimana-, farming terraces, hot springs, forests of giant cactus and spectacular waterfalls. The whole area is part of a protected area, the Reserva Paisajística Subcuenca del Cotahuasi.
The usual way in is from Arequipa on a long bus or car journey (on the order of 9 to 11 hours) to the town of Cotahuasi, which serves as your base. From there you visit the sights, several of them quite spread out, so plan on at least 3 or 4 days. It's a destination with harder logistics than the Colca: bring cash, allow time and, ideally, lean on local operators or guides. Pack for both cold and heat (temperatures change a lot with altitude), sun protection and good footwear.
The Cotahuasi Canyon was carved over millions of years by the Cotahuasi river cutting its way through the Andes, in an area dominated by the Coropuna and Solimana snow peaks. The region has been inhabited since pre-Inca times -with a Wari presence- and later under the Incas, and it keeps terraces, roads and colonial villages. Today it is a Reserva Paisajística, protected for its natural and cultural value. More detail on the history page.
Read the full history ↓The 'White City' of sillar stone, at the foot of the Misti volcano: a colonial capital built of volcanic rock, cradle of rebellions and of Vargas Llosa, gateway to the Colca and to the Cotahuasi, one of the deepest canyons in the world.
Read the history of Arequipa →No exact prices: a scale from $ (budget) to $$$$$ (luxury), with 2-3 options per category.
Origins, formation and what the sources say.
The Cotahuasi Canyon opens in the far northwest of the Arequipa region, in the province of La Unión, carved by the Cotahuasi river over millions of years. At more than 3,500 meters deep, it ranks among the deepest canyons on the planet, deeper even than the famous Colca. Measured from the riverbed to the summits flanking it, the total drop is greater still, dominated by the Coropuna and Solimana snow peaks, which reach or exceed 6,000 meters.
Its formation is a chapter of Andean geology. The uplift of the range, the area's volcanic activity and the relentless erosion of the river gradually opened this extremely deep cut in the earth. The result is a landscape of enormous scale and variety: within a few kilometers you go from frozen summits to warm valley floors beside the river, crossing very different ecological levels, with farming terraces, forests of giant cactus and spectacular waterfalls.
To protect that natural and cultural heritage, the whole area is part of the Reserva Paisajística Subcuenca del Cotahuasi, a protected area that safeguards not only the canyon itself but also the biodiversity, the snow peaks, the wetlands and the traditional ways of life of the communities living there.
The Cotahuasi valley is not only nature: it has been the setting for human life for thousands of years. The area was inhabited in pre-Inca times, with a presence of the Wari culture -the great Andean state that spread across much of the Peruvian highlands around the first millennium AD- and was later absorbed into the Inca empire. From those times, farming terraces, stretches of pre-Hispanic roads and archaeological remains survive across the valley.
Turning the landscape into agricultural terraces was key to farming such broken ground. As in other Andean regions, communities turned the slopes into terraces held up by stone walls, making use of the canyon's different ecological levels to produce a remarkable variety of crops. That farming heritage is still alive in the valley's villages.
With the arrival of the Spanish, the valley was drawn into the colonial order, and many of its villages -Cotahuasi, Tomepampa, Alca, Puyca- keep churches and street plans of colonial origin on older foundations. Walking their cobbled streets, seeing their churches and talking with their people is a glimpse of a historical continuity running from pre-Inca cultures to the present, in one of the most remote and authentic corners of the Andes.
Cotahuasi's great treasure is its nature. The Sipia Waterfall, its most famous fall, forms where the river narrows sharply and plunges tens of meters in an imposing drop: one of the most remembered images of the canyon. Alongside it are the Luicho hot springs, ideal after a day's walking, and the surprising Judiopampa cactus forest, where columnar cactus reach several meters in a landscape that seems almost otherworldly.
Watching over the whole thing rise the Coropuna and Solimana snow peaks. Coropuna, as well as being one of the highest mountains in Peru, was an important apu, a sacred mountain for Andean cultures, tied to pilgrimages and rituals in pre-Hispanic times. Its snowy bulk, along with Solimana's, gives the canyon a high-mountain frame that few places offer.
Today that richness makes Cotahuasi a nature and adventure destination: trekking between villages and terraces, visits to waterfalls and hot springs, and even whitewater descents for the most experienced, since the Cotahuasi river is known among expedition kayakers and rafters. Its status as a landscape reserve seeks to balance that tourism with conservation of the ecosystem and respect for the communities, in one of the most impressive and least crowded corners of Peru.
For much of the 20th century, the Cotahuasi valley remained one of the most isolated areas of Peru's southern highlands, with difficult dirt roads and little connection to Arequipa, the region's main city. That same remoteness, which held back the economic development of La Unión province, ended up being the reason its natural and archaeological heritage was preserved in a remarkably pristine state, without the pressure of mass tourism or urban sprawl.
Official recognition of that value came in 1988, when the Peruvian state declared the area the Reserva Paisajística Subcuenca del Cotahuasi, one of the protected area categories of the National System of Protected Natural Areas (Sernanp), designed specifically to reconcile conservation with the traditional human and productive activity of its inhabitants, unlike a national park with more restricted access.
Since then, the gradual improvement of the road from Arequipa and the growing fame of the canyon —driven by its standing as one of the deepest in the world— have drawn a growing, though still modest, number of adventure and nature travelers. Today Cotahuasi is promoted as a destination to complement the Colca, for anyone after a less crowded experience, built on community tourism and on local operators who want tourism development to benefit the valley's villages directly.
If the canyon is the work, the Cotahuasi river is the sculptor. This watercourse, which rises in the heights near Coropuna and runs down to join the Ocoña river downstream before reaching the Pacific, is what carved over millions of years the extremely deep gorge that amazes travelers today. Its boxed-in course, with whitewater rapids and stretches that are almost impossible to reach, made it at once a natural barrier and a coveted objective for explorers from all over the world.
In the 1990s, Cotahuasi entered the history of river exploration. International kayaking and rafting expeditions set out to run the river through the canyon for the first time, on multi-day journeys through one of the most remote and committing whitewater stretches on the planet, with no escape routes and no help nearby. Those first descents —documented by the specialist press and by National Geographic— put Cotahuasi on the world map of expedition rafting, alongside the great canyon rivers of the world, and confirmed it as one of the most demanding world-class descents there is.
That explorer's legacy is still alive. Today only a handful of specialist international operators run whitewater expeditions on the Cotahuasi, reserved for very experienced rafters and kayakers, on trips planned down to the last detail during the right water season. For the ordinary traveler, the river is not something you navigate but something you look at from the viewpoints and from the foot of the Sipia Waterfall; but knowing that some of the boldest expeditions in the history of rafting went down that thread of water below adds an extra layer of epic to the immensity of the landscape.