Ruta Nacional 25 – Rio Deseado Canyon Circuit

Ruta Nacional 25 cuts through Santa Cruz’s most dramatic badlands, where the Rio Deseado has carved deep canyons exposing 150-million-year-old fossils and petrified forests. This geological wonderland runs from Puerto Deseado inland to the town of Las Heras, passing through the otherworldly landscapes of Jaramillo and Monumento Natural Bosques Petrificados. The route’s technical highlight is the descent into Cañadón del Río Deseado, where ancient volcanic ash has created a maze of hoodoos and eroded spires.

Moderate difficulty requiring good ground clearance for washouts and loose volcanic rock sections. The main challenge is fuel planning – carry extra as services are sparse over 400+ kilometers. Spring through fall offers the best weather, though Patagonian winds are constant. This route rewards with exceptional fossil hunting opportunities, dramatic camping spots on canyon rims, and some of Argentina’s most alien landscapes. Perfect for overlanders seeking geological wonders off the beaten path.