Overview
The Atacama Desert straddles northern Chile and extends into southwestern Bolivia, forming one of the most dramatic high-altitude landscapes on the planet. The Chilean portion is anchored by the town of San Pedro de Atacama (2,400 m / 7,900 ft), while the Bolivian altiplano stretches into Potosí Department — home to the Salar de Uyuni, the world's largest salt flat — and Oruro Department.
Despite its reputation for extreme aridity, the region sustains a surprising variety of life and geography: active volcanoes topping 6,000 m, turquoise and pink saline lagoons where flamingos feed, ancient pre-Columbian ruins, and a night sky so unpolluted that several international observatories have been built here.
This is a region of physical contrasts. Daytime temperatures in the lowland desert can exceed 30 °C (86 °F) while nights at altitude regularly drop below freezing, even in summer. Travelers cross between Chile and Bolivia through high-altitude passes, so acclimatization and preparation are not optional extras — they are essential parts of the journey.
Before You Go
Altitude and Health
Most Atacama highlights sit above 3,000 m (9,800 ft); the Bolivian altiplano averages 3,600–4,500 m. Altitude sickness (soroche) is a real risk. Spend at least one to two nights at a moderate elevation before ascending further, stay well hydrated, avoid alcohol during the first 48 hours, and consult a physician before traveling if you have cardiovascular or respiratory conditions. Acetazolamide (Diamox) is used by some travelers — discuss with a doctor.
Visas
Entry requirements for both Chile and Bolivia depend on your nationality and can change. For current, accurate requirements check TravelerPulse's Visas section and confirm directly with the official Chilean and Bolivian immigration authorities before you travel.
What to Pack
- High-SPF sunscreen and UV-protective sunglasses (UV radiation is intense at altitude)
- Warm layers, including a down jacket and gloves — nights are cold year-round
- Sturdy, broken-in walking shoes or hiking boots
- Electrolyte supplements and a reusable water bottle
- Cash in both currencies; card acceptance outside San Pedro and Uyuni is unreliable
- Personal medication supply — pharmacies in small towns have limited stock
Connectivity
Mobile coverage is patchy across much of the desert. San Pedro de Atacama and Uyuni town have reasonable 4G; remote areas have little to none. Download offline maps (e.g., Maps.me or Google Maps offline) before departing a hub town.
Getting There
Chilean Side
Calama is the main gateway airport for the Chilean Atacama, receiving domestic flights from Santiago and other Chilean cities. From Calama, San Pedro de Atacama is approximately 100 km east by paved road; shared bus services and private transfers operate this route — verify current schedules and providers locally or through your accommodation.
Bolivian Side
Uyuni is served by domestic flights from La Paz and Sucre, with schedules varying by season — confirm with Bolivian carriers. Uyuni also has a train station connected to Oruro; the train journey is scenic and popular but slow. La Paz's El Alto International Airport (4,061 m) is one of the world's highest commercial airports and a common first stop for acclimatization before continuing south.
Cross-Border Travel
A classic multi-day 4WD tour links San Pedro de Atacama (Chile) with Uyuni (Bolivia) crossing the Eduardo Avaroa Andean Fauna National Reserve. Tours depart from both sides; the route crosses at the Hito Cajón/Portezuelo del Cajón border post. Verify border hours and current crossing conditions with tour operators before booking, as this can change seasonally.
Getting Around
Within the Chilean Atacama
Most attractions around San Pedro de Atacama are accessed by organized day tours, which is practical given the distances involved and the absence of public transport to many sites. Bicycle rental is a popular option for closer landmarks such as Valle de la Luna (verify road conditions before cycling, particularly in summer heat). Some travelers hire vehicles in Calama, though driving on unpaved salt flats and volcanic tracks requires a high-clearance vehicle.
Within the Bolivian Altiplano
The Bolivian side's attractions are almost exclusively reached by 4WD jeep tours departing from Uyuni. Three-day tours are standard and include the Salar de Uyuni, Laguna Colorada, Laguna Verde, and the Sol de Mañana geyser field. Shorter one- or two-day tours focus on the salt flat only. Jeep convoy travel is the norm; infrastructure for independent driving is limited and navigation is genuinely difficult.
Between Sites
The distances between key sites in both countries are large. Plan itineraries carefully so you are not doubling back over identical ground. A common traveler circuit moves from San Pedro → border crossing → Uyuni → La Paz or vice versa.
Things to See & Do
Chilean Atacama
- Valle de la Luna (Moon Valley): Sculpted salt and clay formations, best viewed at sunset when the landscape turns amber. Located within Los Flamencos National Reserve.
- El Tatio Geysers: One of the world's highest geyser fields (~4,320 m), most active at dawn. Tours typically depart San Pedro in the early morning hours — dress warmly.
- Salar de Atacama and Laguna Chaxa: Chile's largest salt flat hosts colonies of three flamingo species; Laguna Chaxa within Los Flamencos Reserve is particularly accessible.
- Atacameño villages and Pukará de Quitor: A 12th-century pre-Columbian fortress above the San Pedro valley; the archaeology museum in San Pedro (Museo Arqueológico R. P. Gustavo Le Paige) holds significant collections — verify current opening hours.
- Stargazing: Several licensed astronomical tour operators run nightly sessions in the desert. The ALMA and other observatories are in the region, though public access to research facilities is restricted or by prior arrangement only.
Bolivian Altiplano
- Salar de Uyuni: The 10,582 km² salt flat is visually extraordinary at any time, but the shallow-water rainy season (January–March) produces the famous mirror-like reflections of the sky.
- Laguna Colorada: A high-altitude red lake (its color comes from algae and sediments) within Eduardo Avaroa Reserve, usually teeming with flamingos.
- Laguna Verde and Volcán Licancabur: The green lake at the foot of the near-perfectly conical Licancabur volcano is a standard last stop on the Chile-Bolivia crossing.
- Sol de Mañana Geyser Field (~5,000 m): Active fumaroles and mud pools at one of the highest geyser fields in the world.
- Isla Incahuasi (Cactus Island): A rocky outcrop rising from the salt flat covered in giant cardón cacti, some estimated to be over 1,000 years old.
- Train Cemetery, Uyuni: A collection of rusting 19th- and early-20th-century steam locomotives on the edge of town — an unusual industrial heritage site.
Food & Drink
San Pedro de Atacama
San Pedro has a well-developed restaurant scene by small-town standards, with options spanning Atacameño regional cooking, Peruvian-influenced dishes, and international cuisine catering to a heavy backpacker and adventure-traveler crowd. Local specialties include dishes featuring llama meat, quinoa, and corn-based preparations. Fresh produce is trucked in; prices tend to be higher than Chilean urban centers given the remote location.
Uyuni and the Bolivian Altiplano
Uyuni town has a range of restaurants along its main streets. Bolivian staples — soups, salteñas (savory pastries eaten at breakfast or mid-morning), rice-heavy plates, and grilled meats — are widely available. Food on multi-day tours is prepared by tour cooks at remote lodges or salt hotels; quality and variety can vary significantly between operators. Confirm meal arrangements before booking a tour.
Water Safety
Do not drink tap water in either country in this region. Bottled or purified water is essential. At high altitude your body requires more fluids than at sea level; drink consistently throughout the day even if you do not feel thirsty.
Alcohol
Alcohol at altitude hits harder and faster. Many travelers choose to abstain or limit consumption significantly, especially during the first few days.
Practical Information
Money
ATMs exist in San Pedro de Atacama and Uyuni but can run out of cash, especially on long weekends. Carry sufficient cash in the local currency before heading to remote areas. USD is accepted in many tourist businesses but rates vary — verify locally. Credit cards are usable at mid-range and upscale accommodations in both hub towns; in the field, cash is king.
Communications
International SIM cards with local data plans can be purchased in Calama or La Paz. Providers in both countries have very limited signal across the desert interior. Inform someone of your itinerary and expected check-in times before heading into remote areas.
Medical Facilities
San Pedro de Atacama has a small health post for basic care; serious medical issues require evacuation to Calama or Antofagasta. Uyuni has a basic hospital. Travel insurance that explicitly covers high-altitude rescue and medical evacuation is strongly recommended for this region.
Electricity
Chile uses 220V / 50Hz with Type B plugs. Bolivia uses 220V / 50Hz with Type A and C plugs. Bring a universal adapter.
Photography
The light in the Atacama is intense and the landscapes are photogenic. Always ask permission before photographing people in indigenous communities. Some sites within reserves may have photography restrictions on commercial use.
Safety
The Atacama region is generally considered safe for tourists, and the areas most visited see a steady international traveler flow. The primary risks are environmental rather than criminal.
Altitude illness is the most common serious health issue visitors encounter — see the Before You Go section. Symptoms including severe headache, vomiting, confusion, or difficulty breathing at altitude require immediate descent and medical attention.
Weather and temperature swings are extreme. Hypothermia is a risk at night and at elevation even in summer. Do not underestimate the cold at El Tatio, Laguna Colorada, or on the salt flat after dark.
Flash floods (aluviones) can occur in river valleys and gorges during the Bolivian winter rainy season (locally called the Altiplanic Winter or Invierno Boliviano, typically July–August in northern Chile) when convective storms bring sudden downpours. Follow local guide advice and do not enter dry riverbeds during storms.
Vehicle breakdowns in remote areas are a genuine concern; reputable tour operators carry spares and communication equipment. Ask about emergency procedures before booking any multi-day jeep tour.
In both Chile and Bolivia, keep copies of important documents separate from originals and maintain standard urban awareness in Uyuni and Calama regarding belongings in crowded spaces.
Local Culture & Etiquette
The Atacama region has been inhabited for thousands of years. The Atacameño people (Lickanantay) have lived in the Chilean desert for millennia, and their descendants continue to maintain communities, land rights, and cultural practices in and around San Pedro. Across the border, Aymara and Quechua communities have equally deep roots in the altiplano.
When visiting indigenous villages or sacred sites, behave respectfully: ask before entering non-public areas, follow posted rules at archaeological sites, do not remove rocks, plants, or artifacts, and seek permission before photographing individuals or ceremonies.
The regional calendar includes a number of Andean festivals that blend pre-Columbian traditions with Catholic influences, including Carnival, which is celebrated with particular energy in Oruro, Bolivia (Carnaval de Oruro is a UNESCO Intangible Cultural Heritage — dates shift annually, verify locally). Attendance at community events is generally welcomed if visitors are respectful and engaged rather than treating ceremonies as tourist spectacle.
Both Chile and Bolivia take environmental protection of this unique ecosystem seriously. Stick to marked paths in national reserves, carry out all waste, and avoid purchasing products made from protected species.
