The day begins in Argentina and ends in Chile, separated by one of Patagonia's quietest border crossings. Between the refugio on the shores of Lago Pueyrredón and the first proper town on the southern Carretera Austral, the road passes through landscapes that shift register entirely — from the turquoise basins and lenga forests of the Argentine steppe to the wind-scoured open country around the pass, and then into the greener, damper valley that receives you on the Chilean side. It is a day defined less by what you stop to see than by what surrounds you the whole way through.
The Drive
Leave the refugio at 9 am, heading first toward the Garganta del Río Oro — the Throat of the Gold River — a short detour into the Pueyrredón area before the day's main push begins. The Río Oro, fed by snowmelt from the flanks of Cerro San Lorenzo, drops through a narrow canyon here in a rapid-fire succession of rapids and cascades, lenga forest and soft grass giving way abruptly to a gorge of considerable depth and noise. The name carries traces of early European prospectors who worked this watershed at the turn of the twentieth century, drawn by the same remoteness that makes it feel so untouched today.
Back at Lago Posadas village, fuel up at the YPF before turning west onto Ruta Provincial 41 — the Monte Zeballos Road, one of the highest routes in all of Santa Cruz province. The road climbs from lake-level steppe through lenga woodland and into high mountain country, the kind of gravel track that repays a loose grip on the schedule. Condors ride the thermals along this corridor and guanacos appear with comfortable regularity in the open country. From here the route presses on to Paso Rodolfo Roballos, the border crossing that divides Argentine Santa Cruz from Chilean Aysén.