At over 4,000 meters above sea level, where the air is thin and the silence is almost total, the Sajama National Park holds one of the most extraordinary landscapes of the Bolivian highlands. At the center of it all stands the Sajama Volcano, with its 6,542 meters the highest peak in Bolivia, a perfect cone of ice and volcanic rock that dominates the horizon in every direction. Around it, an ecosystem of rare integrity that few travelers know and even fewer visit.
Founded in 1939, Sajama National Park is the oldest national park in Bolivia. Despite this historical record, it remains one of the least frequented places in all of South America, making it an authentic destination for those seeking direct contact with high-altitude nature, without the pressure of mass tourism.
The Queñua Forests: Trees That Defy Altitude
One of the most surprising elements of the park is the presence of the queñua (Polylepis) forests, considered among the highest tree forests in the world. These reddish-barked, peeling trees grow at altitudes above 4,500 meters, clinging to rocky slopes with a tenacity that seems to defy all botanical logic. Walking among these twisted and mossy trunks, in a silence interrupted only by the wind, is an experience that no photograph can fully capture.
The queñua forests play a fundamental ecological role: they provide shelter and food for numerous species of endemic birds of the Andean highlands. Those who walk the trails carefully can observe the giant hummingbird (Patagona gigas), the largest hummingbird species in the world, moving among the branches in search of nectar. The avian biodiversity of the park is remarkable for such an extreme environment.
Lagoon with flamingos and highland fauna
The lagoons scattered throughout the park are among the most accessible wildlife observation points. In the shallow, algae-rich waters, colonies of Andean flamingos (Phoenicoparrus andinus), a species classified as vulnerable, gather, finding ideal conditions to feed. Their presence gives the lagoons a pinkish hue that contrasts with the intense blue of the Andean sky and the white of the snow on the volcano.
In addition to flamingos, the park is home to numerous specimens of vicuña, the wild camelid of the Andes, which grazes freely on the open plains. Spotting a group of vicuñas moving closely together at dawn, with Sajama in the background, is one of those moments that alone justify a trip. Less frequent but present in the park are also the puma and the Andean cat, among the rarest felines on the continent.
The hot springs: natural warmth at impossible altitude
A few kilometers from the village of Sajama, the small Aymara settlement that serves as the main access point to the park, there are natural hot springs. Soaking in these warm pools, with temperatures reaching 30-35 degrees, while the external temperature can drop below zero, is a physical and sensory contrast that is hard to forget. The springs are fed by the residual volcanic activity of the region and do not require any artificial structure to be enjoyed.
The village of Sajama itself deserves attention: the traditional adobe houses, the white colonial church that stands out against the volcano, and the presence of the Aymara community that autonomously manages part of the local tourism offer an authentic human context. Many visitors choose to stay with the families of the village in simple but genuine accommodations.
How to get there and when to visit
The park is most easily reached from La Paz, traveling about 230 kilometers west towards the border with Chile. The bus or private vehicle route crosses the Bolivian highlands and takes about 4-5 hours. There is no direct public transport service to the village of Sajama: the most practical solution is to take a bus to Patacamaya or to the Tambo Quemado border and get off at the intersection for Sajama, from where taxis can occasionally be found or a ride can be negotiated.
The best time to visit is from May to October, during the dry season of the highlands, when the skies are clear and the conditions for observing wildlife and the landscape are optimal. It is essential to bring layered clothing, high-factor sun protection, and a few days of acclimatization to the altitude before undertaking challenging hikes. Those arriving directly from La Paz without acclimatization risk altitude sickness, which can manifest quickly at these elevations even in physically fit individuals.
