Cruce de los Andes-Paso de los Piuquenes

Okay, adventure seekers, let's talk about the Cruce de los Andes Paso de los Piuquenes, nestled high in the Argentinian Andes, in the province of Mendoza! This pass hits a whopping 4,350m (14,271ft) above sea level, so get ready for some serious altitude!

The road? Well, let's just say it's not for the faint of heart. We're talking gravel, rocks, bumps, and maybe a few tippy moments. You'll need a 4x4 and some solid experience with unpaved mountain roads. Forget about this route from October to June, unless you're a fan of impassable conditions (weather depending, of course). It's steep, and the last stretch is more of a hiking path than a road.

Keep an eye on the sky – thunderstorms can turn those unpaved surfaces into a 4x4-only zone, or worse. And even in summer, ice and snow can be a factor, so be cautious.

This pass, also called Portillo Argentino, connects Tunuyán in Argentina with San Gabriel in Chile. But a word of warning: if you have respiratory issues or heart problems, this might be one to skip. The air is THIN up there. Altitude sickness is a real concern, and even your engine might struggle with the low oxygen. The summit has about 40% less oxygen than sea level, making breathing a chore. Your pulse will be racing, and even simple movements will feel harder. This high altitude, combined with the unpredictable weather and steep grades, makes this pass a challenging but rewarding adventure.