🇧🇴 Bolivia · Altiplano and the Andean west
Barely ten kilometers from downtown La Paz the landscape changes all at once and seems to drop you on another planet. Valle de la Luna is a maze of columns, spires and ridges of clay and rock, carved over thousands of years by wind and rain, rising from arid, unruly ground at the city's doorstep. Its strange, lunar look gave it its name and made it one of the most popular and accessible nature walks in the Bolivian capital.
It is not a valley in the usual sense, and there are no snow peaks: what there is, is pure geology, a display of erosion that has shaped the ground into surprising forms, in tones running from ochre and beige to gray and, in places, reddish shades. Well-marked trails and boardwalks let you cover it comfortably, look out from viewpoints and walk among the formations, on a short but very photogenic outing.
This guide walks Valle de la Luna with a practical eye: how to get there from La Paz, which circuits to follow, when to go for the best light, what to keep in mind and how to combine it with other attractions such as Chacaltaya. It is an ideal half-day trip out of the city, perfect for anyone who wants easy contact with an unusual natural landscape without going far.
Valle de la Luna, in southern La Paz (the Mallasa area), has no 'history' in the sense of human events like a city or a monument: its history is, above all, geological. The formations we admire today are the result of a long process of erosion that over thousands of years shaped deposits of clay and soft minerals, carved by wind, rain and temperature swings into this maze of columns, spires and ridges with a lunar look. The ground is made up largely of clays of different tones, and of minerals that erode at different rates, which produces the unruly shapes that define the place. The La Paz basin as a whole is famous for its erosion landscapes, of which Valle de la Luna is the most celebrated and most visited example (another well-known one is Valle de las Ánimas, in the same area). The name 'Valle de la Luna' caught on because the landscape resembles the lunar surface, and a widely repeated local tradition says that astronaut Neil Armstrong himself, on visiting the place, remarked how much it reminded him of the Moon, though this is an anecdote whose truth is not confirmed. Over time the site was fitted out for tourism, with trails, boardwalks and viewpoints, becoming one of the most accessible and popular natural attractions in La Paz. The full history is on our history page.
Read the full history ↓The altiplano department and the seat of government: cradle of Tiwanaku and of Murillo's revolution, Aymara land beside Lake Titicaca, dominated by the Cordillera Real and its snowcapped Illimani, with the highest seat of government in the world and an Amazonian flank that drops all the way down to the Madidi.
Read the history of La Paz →No exact prices: a scale from $ (budget) to $$$$$ (luxury), with 2-3 options per category.
Origins, formation and what the sources say.
You step off the minibus twenty minutes from downtown La Paz and, all at once, the city disappears: in front of you opens a maze of pale spires, fluted gullies and clay columns that look carved by someone with far too much free time. There was no sculptor, no volcano, no earthquake. The only author of Valle de la Luna is erosion, and its history is not measured in dates, battles or foundings, but in thousands of years of wind, rain and sharp temperature swings working on one of the most fragile soils in the La Paz basin, in the southern area known as Mallasa.
The ground in this part of the La Paz basin is made up largely of clay sediments and minerals of differing hardness, laid down over epochs when the region had environmental conditions very different from today's. Over time, wind, seasonal rain and the sharp swings in temperature between day and night wore those materials down. Because the various layers and minerals erode at different rates —some hold out longer, others crumble easily— the result was this unruly relief of pinnacles and gullies that looks deliberately sculpted.
Valle de la Luna is the most celebrated and most visited example of a phenomenon that repeats at several points around La Paz, a region famous for its erosion landscapes. Very close by, in the same southern area, lies Valle de las Ánimas, with similar formations in the shape of spires that are taller and sharper still. All these landscapes are, at bottom, the same story: water, wind and time working on fragile ground.
Valle de la Luna sits in the Mallasa area, in the south of the municipality of La Paz, about ten kilometers from downtown and at a slightly lower altitude than the built-up center. That southern zone, lower and milder than the rest of the La Paz bowl, was historically a place of rest and recreation for the city's residents, with country houses, green spaces and, later on, attractions such as the Mallasa zoo, near the valley.
The La Paz basin region, which the valley belongs to, was inhabited from pre-Hispanic times by Aymara-speaking peoples, heirs to the long altiplano tradition whose great center was Tiwanaku. Although Valle de la Luna itself was not a documented settlement or cult site, the whole area forms part of a millennia-old Andean cultural landscape, in which Aymara communities read the territory, the mountains and the shapes of the land within their own worldview.
As La Paz grew through the 20th century, the southern zone folded into the life of the city, and the strange eroded landscape of Mallasa began to draw the attention of visitors and the curious. Over time it went from local geological oddity to recognized tourist attraction, close enough to downtown to visit in half a day.
The name of Valle de la Luna comes from something very simple and very visual: how much its formations resemble the imagined surface of the Moon. Walking among its pale clay columns and gullies, on arid, rolling, silent ground, the association with an extraterrestrial landscape arises by itself, and it was precisely that impression that ended up giving the place the name by which it is known around the world today.
Over the years that christening picked up an anecdote repeated again and again by guides and brochures: the idea that astronaut Neil Armstrong himself, the first man to set foot on the Moon, visited the place and remarked how much it reminded him of the satellite, helping to popularize the name. It is an endearing and widely circulated story, but it is worth treating with caution: it is a local tradition whose truth is not confirmed by solid sources, one of those tourist legends that travel by word of mouth.
Beyond the anecdote, the landscape does live up to its name. The raking light of morning or late afternoon brings out the textures and folds of the clay, and the whole takes on that unreal air so many visitors are after. Valle de la Luna is today one of the most recognizable natural icons around La Paz, and its evocative name is an essential part of the draw.
As Valle de la Luna gained fame, the need arose to organize visits and, at the same time, to protect it. Its formations are fragile: the same erosion that created them can destroy or degrade them if people walk freely over them. So over time the site was fitted out for tourism with infrastructure designed to reconcile public access with keeping the landscape intact.
Today the valley has a ticket booth at the entrance, marked trails and boardwalks that guide visitors through the inside of the clay maze, and viewpoints from which you take in the whole. Two circuits are usually offered —a shorter one and a longer one— which let you work through the formations without stepping on or damaging them, on a walk lasting between three quarters of an hour and a little over an hour. The signs and the boardwalks are exactly what marks out a responsible visit: leaving the trails speeds up the site's deterioration.
This development turned Valle de la Luna into one of the most accessible and popular nature walks in La Paz, built into the tourist circuits of the southern zone. Its closeness to downtown, its easy route and its unusual landscape make it ideal for a half-day outing, and explain why it appears on almost every itinerary of people visiting the Bolivian capital.
Valle de la Luna is not an isolated oddity but the most famous member of a whole family of erosion landscapes that surround La Paz. The La Paz basin, boxed in between the altiplano and the valleys, is formed of soft sedimentary soils that the climate has sculpted over millennia, producing gullies, spires and spectacular formations at various points in the city and around it.
The best-known relative is Valle de las Ánimas, also in the southern zone, where erosion shaped very tall, thin, sharp rock spires that look like a forest of stone spears. Its name evokes those vertical silhouettes which, in the popular imagination, recall figures or 'ánimas' (souls). Other sectors of the La Paz bowl show equally striking rock walls and gullies, the product of the same geological process.
Seen together, these landscapes tell the deep history of the La Paz territory: that of a fragile land in permanent transformation, where water and wind are still at work today, slowly, as they were for thousands of years. Valle de la Luna is the most accessible door into that natural history, and that is why it became the symbol of an entire La Paz geography marked by erosion.