The Rainbow Valley, or Valle del Arcoiris, is a landscape of hills and cliffs striped in shades of red, orange, green, yellow and violet, the result of different minerals in the rock exposed by erosion. It lies about 90 km from San Pedro de Atacama, a drive that takes you past dry plains and rocky canyons, and it is usually quieter than the major sights, which makes it appealing to travellers who like to have a place to themselves. The colours are strongest in morning and afternoon light, when the sun picks out the stripes, and the dry air and wide sky make the scene feel almost unreal. Most tours pair the valley with the Yerbas Buenas petroglyphs, a group of rock carvings that local guides describe as thousands of years old. Figures of llamas, humans and geometric shapes are pecked into the dark rock faces, and the site is believed to have been used by caravans and herders crossing the region. Visiting the petroglyphs adds a human story to the landscape, and guides explain how the carvings may have been used to mark routes, water sources and sacred places. Together the colours and the rock art make a rewarding half day for those who enjoy both geology and history.
How it works
Tours generally leave in the morning and return after lunch, taking four to five hours. The road is partly unpaved, and the trip is usually by minibus. A guide leads short walks in the valley and at the petroglyph site, explaining the geology and the archaeology. Some departures combine the Rainbow Valley with other stops, so check the itinerary, and ask whether entry and a snack are included.
What to expect
The walks are easy but the ground is loose and dusty in places, so wear sturdy shoes. The sun is intense and shade is rare, so carry a hat, sunglasses, sunscreen and water. Take care not to climb on the petroglyph rocks or touch the carvings, since oils from skin and footprints can damage them. Photographers will enjoy the shifting colours and the contrast of dark rock art against pale ground, but keep a respectful distance and follow your guide's directions.
Making the most of it
This outing is a good choice for a quieter morning after a busy day or a long, early start. Combine it with the Ruta de los Salares or Laguna Chaxa if you want to see more of the region, though it is best not to rush. If you have limited time and are choosing between the Rainbow Valley and the Valle de la Luna, remember they are very different, with the Rainbow Valley more about colour and the Moon Valley more about shape and sunset. Many visitors enjoy both.
What to expect
The experience
A half-day tour to a valley of banded, multicoloured hills and a site of ancient rock carvings.
Best time
Morning, when the sun brings out the colours and the air is cooler.
How long
Four to five hours including the drive.
Tips
Wear sturdy shoes, carry water and sun protection, and do not touch the carvings.
Quick picks
- Best for
- Travellers who like colourful geology and want a quieter outing.
- Families
- Easy walks and rock art suit children who enjoy exploring.
- Couples
- Quiet, scenic viewpoints with few other visitors.
- Pair with
- Pair it with Laguna Chaxa or a relaxed afternoon in the village.
- Time needed
- Allow half a day.
Good questions
Where is the Rainbow Valley?+
It lies about 90 km from San Pedro de Atacama, reached by a mix of paved and unpaved roads.
What are the Yerbas Buenas petroglyphs?+
They are ancient rock carvings of animals, people and symbols, which guides describe as thousands of years old.
Is it crowded?+
It is usually quieter than the headline sights, which is part of its appeal.
When is the best light?+
Morning and late afternoon bring out the colours of the hills most strongly.
Can I touch the carvings?+
No. Skin oils and footprints can damage the rock art, so look from a distance and follow your guide.