Cerro Toco is one of the most accessible high summits in the Atacama, an extinct volcano that rises to about 5,600 m on the altiplano east of San Pedro de Atacama. Most of the altitude is gained by vehicle, so the walk itself is a steady climb on loose volcanic ground rather than a technical mountaineering route, but at this height every step is slow and demanding. The reward is a panorama of the Salar de Aguas Calientes, the colourful lagoons below, the cones of neighbouring volcanoes such as Lascar and Licancabur, and a sense of vastness that is hard to find anywhere else. Many people describe the silence and the sky at the summit as the highlight of their trip. Tours begin early, with an hour or more of driving to the starting point, where a guide briefs the group on altitude, pace and safety. The climb takes a few hours at a very slow pace, with frequent breaks, and the descent is quicker on the soft scree. Guides carry oxygen and first-aid equipment and monitor the group for signs of altitude sickness. The experience suits people who are fit, curious and well acclimatised, and who are happy to turn back if conditions or their bodies say so.
How it works
Most operators require that you spend at least two nights in San Pedro before attempting the climb, and a few days is better. The tour runs as a long morning with pickup in the early hours, climbing in the morning when the weather is most stable, and returning to the village in the afternoon. Group size is usually small, and many companies offer private options.
What to expect
The air at 5,000 m and above holds roughly half the oxygen found at sea level, so you will breathe hard even on gentle slopes. Walk slowly, take small steps and drink plenty of water. Dress in layers, including a windproof jacket, hat, gloves and sunglasses, since the wind is cold and the sun is intense.
Altitude sickness can affect anyone regardless of fitness, with symptoms such as headache, nausea and dizziness, so tell your guide immediately if you feel unwell. Anyone with heart, lung or blood-pressure conditions, or who is pregnant, should consult a doctor before going.
Making the most of it
Schedule the climb after easier outings such as the Valle de la Luna, so that your body has time to adjust, and avoid alcohol the night before. Bring snacks, a hot drink, a camera and spare batteries kept warm. If you are unsure of your fitness, ask about shorter, lower walks as an alternative.
Stay close to your guide and follow instructions about pace and route, because the ground is loose and the weather can change quickly. A summit at this height is a special achievement, and the view makes the effort worthwhile.
What to expect
The experience
A guided early-morning climb of an extinct volcano on the altiplano, with panoramic views from the summit.
Best time
Morning, when the weather is most stable.
How long
Six to eight hours including driving.
Tips
Acclimatise for at least two days first, walk slowly, dress warmly and tell your guide about any symptoms.
Quick picks
- Best for
- Fit, well-acclimatised hikers who want a high summit without technical climbing.
- Families
- Not recommended for young children because of altitude and cold.
- Couples
- A shared achievement and a quiet, wide view.
- Pair with
- Pair it with a restful afternoon, since it is tiring.
- Time needed
- Allow a full morning and afternoon.
Good questions
How high is Cerro Toco?+
The summit is at about 5,600 m above sea level, far higher than San Pedro de Atacama at around 2,400 m.
Do I need to be very fit?+
A good level of fitness helps, but acclimatisation matters more. Go slowly and listen to your guide.
Is it technical?+
No. It is a walk on loose volcanic ground, with no climbing equipment needed on the normal route.
What about altitude sickness?+
It can affect anyone. Spend a couple of days in the region first, drink water, and tell your guide if you feel unwell.
What should I wear?+
Layers, a windproof jacket, hat, gloves, sunglasses and sturdy boots.