Camino de los Seismiles — Paso Pircas Negras to Fiambalá via Ojos del Salado Approach
World's highest volcano on your doorstep. Respect it.
The Seismiles corridor earns its name from the string of 6,000-metre volcanoes that line the Argentine-Chilean border here — Ojos del Salado, the world’s highest active volcano at 6,893 m, dominates the skyline as you grind south from Paso Pircas Negras through the Puna de Atacama. From the Chilean border crossing, the track drops into Argentina’s Catamarca Province, following rough volcanic gravel and salt flat crossings through Laguna Verde and the Refugio Atacama approach road before descending toward Fiambalá in the valley below. Altitude is the defining hazard — the route spends hours above 4,500 metres, and several key waypoints push past 5,000 m. Acclimatise in San Pedro de Atacama or Copiapo before attempting this, not after.
This is Expert territory. You need a capable high-clearance 4WD with a snorkel and cold-weather engine prep — temperatures plunge below -20°C at night even in summer. Fuel from Fiambalá on the Argentine side; the Chilean approach via Copiapo is the common entry. There is no cell service, no rescue infrastructure, and no margin if your vehicle fails at 5,000 metres. Carry at minimum 120 litres of fuel, two spare tyres, and a sat-comms device. Best window is November through March. The payoff is volcanic desert on a scale that makes most trails look like a carpark — bone-white salt pans, rust-coloured calderas, and zero other vehicles.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Backcountry, High Clearance, Overland Route |
| Surface | Gravel, Rock, Sand |
| Features | Camping, High Altitude, Remote, Scenic |
| Length (miles) | 186 mi / 300 km |
| Duration | 2-3 days |
| Max elevation (ft) | 16405 ft |
| Best season | November-March |
| Minimum vehicle | Expedition-built high-clearance 4WD, cold-weather prep |
| Nearest town | Fiambalá, Catamarca, Argentina |
| Land manager | Gendarmería Nacional Argentina / Dirección de Parques Nacionales Argentina |
| Permit required | Yes |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| Official sources | Argentina National Parks |
| Start coordinates | |
| End coordinates | |
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Location
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Frequently asked questions
What kind of vehicle do you actually need for Camino de los Seismiles — can a lifted Tacoma or 4Runner handle it?
A stock or mildly lifted truck won't cut it here. You need a purpose-built expedition rig with aggressive all-terrain tires, a snorkel (river crossings and dust), cold-weather-rated recovery gear, and a reliable engine tune for sustained operation above 4,500m. Fuel management, redundant cooling, and spare parts aren't optional at this altitude and remoteness.
When is Camino de los Seismiles actually passable, and what happens if you go outside that window?
November through March is the only realistic window — Andean winter from April to October brings snow, ice, and road closures that can strand you at altitude with zero rescue infrastructure. Even in summer, afternoon storms roll in fast on the Puna; start early each day.
Do you need permits to drive this route, and how do you get them?
Yes. You'll need to register with Gendarmería Nacional Argentina at border control checkpoints, and depending on your approach toward Ojos del Salado, climbing or access permits may be required through Parques Nacionales Argentina. Sort paperwork in Fiambalá before you head out — there's no fixing it once you're on the mountain.
What's the hardest section of this route and what should I actually expect driving it?
The stretch approaching the Ojos del Salado flanks near the 5,000m mark is the crux — loose volcanic rock, no defined track in sections, zero margin for a mechanical failure, and altitude that will degrade both your engine output and your decision-making. Acclimatize at least two nights in Fiambalá or at lower elevation before attempting the high section.
Is there any water or fuel available on route, or do you need to carry everything from Fiambalá?
Carry everything. There are no fuel stops, no reliable water sources, and no services for the full 300km once you leave Fiambalá. Bring more fuel than your range calculation says you need — high altitude and rough terrain will kill your efficiency. A minimum 50-liter auxiliary fuel capacity and 10+ liters of potable water per person per day is the baseline.
Trail track
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