Campo de Piedra Pómez Volcanic Desert Traverse

Campo de Piedra Pómez stretches across 20 kilometers of pure volcanic pumice near El Peñón in Catamarca, where violent eruptions 600,000 years ago blanketed the high desert in white stone that looks like an alien planet. This remote traverse follows mining tracks between towering pumice formations carved by wind into bizarre sculptures, past turquoise thermal springs and smoking fumaroles that remind you this landscape is still geologically active. The route connects to the old Inca trail that runs toward Chile, passing the abandoned sulfur mine at Salar de Antofalla where workers once extracted minerals from the world’s fourth-largest salt flat.

Extreme conditions demand a modified 4WD with underbody protection and multiple spare tires — the sharp pumice shreds rubber faster than desert thorns. Altitude sickness hits hard at 3,800 meters, and weather can shift from blazing sun to hail storms in minutes. Carry extra fuel, water for three days, and emergency gear; the nearest help is 200 kilometers away in Antofagasta de la Sierra. Best attempted March through November when snow doesn’t block the high passes. What you get is some of the most alien terrain on Earth and bragging rights for crossing one of Argentina’s most challenging volcanic deserts.