🇦🇷 Argentina · The North
Calilegua National Park is the great refuge of the yungas cloud forest in Jujuy and one of the most biodiverse protected areas in all of Argentina. On its slopes different vegetation levels follow one another — from the warm piedmont forest to the cloud-covered montane woodland and the high grasslands — in a succession that changes with every meter of ascent up the Sierra de Calilegua. It's a green, humid world brimming with life, very different from the arid image many people associate with northern Argentina.
Created in 1979, the park protects more than 76,000 hectares and is famous for its wealth of birds — hundreds of species have been recorded, which makes it a first-rate destination for birdwatching — and for sheltering emblematic mammals such as the jaguar, the tapir, the peccary and several cats. An internal dirt road climbs the mountain linking viewpoints and trails, letting you look into the forest, listen to the birdsong and, with luck and an early start, cross paths with its wildlife.
This guide covers the essentials of Calilegua with a practical, warm eye: how to get there and drive the internal road, which trails to do, when to go for the best wildlife, where to stay in the nearby towns and how to combine the visit with other attractions in Jujuy. Calilegua is pure nature: a destination for anyone after forest, birds and silence away from the busier circuits.
The yungas region of Jujuy has been inhabited since pre-Hispanic times and later, in the 19th and 20th centuries, its piedmont was transformed by sugar cane growing, tied to the Ledesma sugar mill. Calilegua National Park was created in 1979 on land that had belonged to the sugar company, with the aim of protecting a representative stretch of yungas cloud forest, one of the country's most biodiverse and most threatened environments. Today it forms part of the Yungas Biosphere Reserve, recognized by Unesco. The full story is on our history page.
Read the full history ↓The northernmost province, the Andean roof of Argentina: land of the Quebrada de Humahuaca and the Inca road, of the Omaguaca pucarás, of the heroic Jujuy Exodus of 1812 and of the sugar mills, with a living Andean culture of carnival, coplas and seven-colored hills.
Read the history of Jujuy →No exact prices: a scale from $ (budget) to $$$$$ (luxury), with 2-3 options per category.
Origins, formation and what the sources say.
How can northern Argentina, the region most people associate with arid landscapes of cactus and reddish gorges, also hide a cloud forest where the humidity gives no respite even in winter? The answer lies in the yungas, also called montane forest or cloud forest. It's an environment that runs as a narrow strip along the eastern slopes of the Andes, from Venezuela to northern Argentina, where it reaches its southern limit after covering more than 3,500 kilometers through Colombia, Ecuador, Peru and Bolivia. In Argentina, the yungas climb the sub-Andean ranges of Salta, Jujuy and Tucumán, forming one of the country's most biodiverse and, at the same time, most threatened ecosystems, with a total area of barely around 2% of the national territory that nevertheless holds a disproportionately high share of its biodiversity.
What makes the yungas forest unique is its organization into altitudinal levels, a kind of stacked layering that changes with height. At the base, between 350 and 700-800 meters above sea level, the piedmont forest is warm, dense and tall, with species such as tipa blanca, cebil colorado and palo blanco; higher up, to around 1,500 meters, comes the montane forest, still lush but with different species, such as laurel and creole walnut; then, towards 1,600-2,000 meters, the montane woodland, where clouds are trapped among the trees and keep humidity constant for much of the year (hence the name 'cloud forest'), dominated by the mountain pine (podocarpus) and a thick cover of mosses, lichens and epiphytic ferns; and, at the very top, above the tree line, the high mist grasslands, cold and wind-beaten. Each level has its own community of plants and animals, so in a few kilometers of climbing on the Calilegua internal road you pass through completely different biological worlds, something few places on the planet let you experience in a single day's drive.
These forests also play an enormous environmental role that goes beyond their scenic value: they capture water from clouds and rain in their canopies and their spongy soil, regulate the flow of the rivers running down to the lowlands, and protect the slope soils from erosion, a crucial ecosystem service in a region of torrential summer rains. Much of the water that supplies the towns and crops of the Chaco plain and the Ledesma valley depends on their health. Calilegua protects a representative and very well preserved stretch of this exceptional environment, which makes it a key piece in the conservation of northwestern Argentina and its extraordinary biological diversity: it's one of the national parks with the highest number of recorded bird species in the country.
The piedmont of the Jujuy yungas had, through the 20th century, an economic history heavily marked by sugar cane. The Ledesma department area was the domain of the great sugar mill of the same name, one of the most powerful companies in the region, which cleared wide stretches of piedmont forest for cane growing. The higher forest, by contrast, on the steeper and wetter slopes, was less suitable for farming and was better preserved.
It was precisely on land linked to that sugar business that the park was born. In 1974, under an agreement with the province of Jujuy, the companies Calilegua S.A.A.I. and Ledesma S.A.A.I. handed over two large upland properties — of some 53,800 and 22,500 hectares respectively — and on that land the national government created Calilegua National Park on July 19, 1979, through decree 1733. The idea was to protect a representative and still well-preserved stretch of the yungas, an environment that in other parts of the north was being wiped out by the advance of farming, ranching and logging. With its 76,306 hectares, Calilegua became the largest national protected area in northwestern Argentina.
The creation of the park was not free of tensions, as tends to happen when a territory with a productive history and existing uses is protected. Over time, Calilegua established itself as a conservation stronghold and a nature destination, and it became part of the Yungas Biosphere Reserve, recognized by Unesco, alongside other protected areas in Salta and Jujuy. Today it stands as a model of how a landscape once tied to extraction can be turned into a sanctuary for wildlife.
Calilegua is famous for its wildlife, and very especially for its birds: hundreds of species have been recorded across its vegetation levels, which makes it one of the most coveted destinations for birdwatchers from all over South America. But the park also protects emblematic, threatened mammals, which make these forests a fundamental refuge for the country's biodiversity.
The most famous is the jaguar, the great American cat, critically endangered in Argentina, some of whose last populations survive in the yungas. The park is also home to the tapir, the largest land mammal in South America, along with peccaries, brocket deer, capuchin monkeys, tayras, coatis and several smaller cats. Seeing these animals in the wild is difficult and takes luck and patience, but their presence alone shows the value of the place.
Conserving Calilegua faces challenges. The park is relatively narrow and surrounded by human activity, which limits wildlife movement and the connection with other natural areas. The road that crosses it, animals killed by vehicles, pressure on the surrounding environments and, in the past, exploration projects in the area, have prompted debate about how best to protect these forests. Integration into conservation corridors, such as the Yungas Biosphere Reserve, is aimed precisely at making sure wildlife has room to endure. Calilegua is, in the end, both a nature destination and a symbol of the challenges of conserving forest in a north that is changing fast.
In 2002, Unesco recognized the Yungas Biosphere Reserve, an extensive territory shared between Jujuy and Salta that includes Calilegua National Park as one of its most important core protected areas. That international recognition highlighted the southern yungas — the far southern end of the great montane forest running along the Andes from Venezuela — as an ecosystem of global importance, at once extremely rich in biodiversity and heavily threatened by the advance of the agricultural frontier, logging and fragmentation.
The biosphere reserve model seeks to reconcile conservation with the development of local communities, promoting sustainable use of the forest, scientific research and nature tourism. Within that framework, Calilegua established itself as a destination for ecotourism and, especially, for birdwatching, which draws visitors from all over the world and generates income for guides and operators in the neighboring towns.
Today the park plays a double role: on one hand it conserves a representative sample of the yungas and its emblematic wildlife; on the other it offers travelers an accessible, uncrowded forest experience, quite different from the arid image usually associated with northern Argentina. Its future depends on balancing the protection of nature with the pressure of the human activity around it, a challenge it shares with much of the country's protected areas.