Ruta 40 Far South — Tres Lagos to Río Turbio via the Patagonian Steppe High Desert

Below El Calafate, Ruta 40 sheds its tourist polish fast. The stretch from Tres Lagos southwest toward Río Turbio runs across one of the most desolate plateaus in South America — volcanic gravel plains scoured by Patagonian westerlies that can pin your door shut when you try to get out. There are no towns, no services, and on a bad wind day the road itself becomes difficult to track where the gravel blows in sheets across the surface. The Río Santa Cruz crossings and the passage through the foothills of the Sistema Austral offer the only shelter, and both are worth stopping for: the river valley cuts deep into the steppe, and condors work the thermals above the canyon walls in numbers you don’t see elsewhere.

Dirt and gravel throughout this section; a 4WD isn’t strictly mandatory in dry conditions but the crosswinds, sudden rain turning clay sections to grease, and sheer remoteness make high-clearance AWD the minimum you should attempt it in. Fuel between Tres Lagos and Río Turbio is unreliable — carry 200+ kilometres of reserve. Water sources exist at estancias but ask permission; don’t assume. Best season is November through March (austral spring-summer), though wind is a constant regardless. Camping on the open steppe is freeing in a way that’s hard to explain until you’ve done it — nothing between you and the horizon in any direction.