Ruta Provincial 43 – Antofagasta de la Sierra Loop
Volcanic moonscape at the top of Argentina
RP 43 loops through some of Argentina’s most isolated volcanic terrain, where the tiny village of Antofagasta de la Sierra sits at 3,350 meters surrounded by active volcanic fields and brilliant blue lagoons. The route threads between Volcán Galán—one of the world’s largest calderas—and a string of high-altitude lakes where three flamingo species feed in mineral-rich waters. Key stops include the boiling thermal field at Campo de Piedra Pómez and Laguna Blanca, where pink flamingos contrast against white salt and black volcanic peaks.
This is expert-level high-altitude desert driving that’ll test both nerve and vehicle preparation. Expect deep sand, loose volcanic rock, and river crossings that can turn treacherous with weather. Fuel range is critical—the loop is over 400 kilometers with zero services. April to October offers the best conditions, though even summer nights drop below freezing. Bring recovery gear, spare parts, and enough food for a week. What you get is arguably Argentina’s most spectacular volcanic landscape, virtually guaranteed solitude, and nights under stars so bright they’ll hurt your eyes.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | High Altitude, Remote, Scenic, Water Crossings |
| Length (miles) | 280 mi / 450 km |
| Duration | 4-6 days |
| Max elevation (ft) | 13780 ft |
| Best season | April-October |
| Minimum vehicle | Modified 4WD with recovery gear |
| Nearest town | Belén, Catamarca |
| Land manager | Provincial Government of Catamarca |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock Hilux or 4Runner run this route, or does it need modifications?
A stock vehicle will get you into trouble out here. You need a modified 4WD with a lift, all-terrain tires, and full recovery gear minimum — think hi-lift jack, traction boards, and a snatch block. At 13,780 ft max elevation, breakdowns happen and you're on your own.
When is this route actually drivable, and what happens if you go in summer?
April through October is the reliable window. Austral summer (November–March) brings flash floods and washed-out river crossings that can trap you for days — the quebradas drain hard and fast with no warning.
Do you need any permits or fees to drive Ruta Provincial 43 through Antofagasta de la Sierra?
No formal permit is required for the route itself, but you must register with the local police checkpoint (comisaría) in Antofagasta de la Sierra before heading into the backcountry — it's a legal requirement and they track who's out there. No fees at time of writing.
What's the hardest section and what actually makes it dangerous?
The river crossings on the approach to the puna plateau are the crux — silty water hides rocky bottoms and depth changes after any rain event. Combined with altitude-starved engines losing 30–40% power above 12,000 ft, recoveries are slow and physically brutal. If you're crossing solo, you're gambling.
How far is the nearest fuel and is 280 miles a problem for range?
Belén is your last reliable fuel stop before the loop — there's limited fuel available in Antofagasta de la Sierra itself, but supply is inconsistent and expensive. Carry a minimum 20-liter jerry can, because 280 miles on mixed high-altitude terrain will punish fuel economy harder than sea-level estimates suggest.
Trail track
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