Qualla: San Guillermo National Park

San Guillermo National Park: Introduction

Sun, 21 Jun 2026 00:00:00 GMT

To get here, you sign a register and prove you are healthy. Visitors to San Guillermo must stop at a ranger office in the dusty town of Rodeo, show vaccination records and certificates of physical fitness, and hire a guide before a single tire turns toward the high country. The bureaucracy is not red tape. It is a measure of how unforgiving this place can be, a wilderness in the Andean puna of San Juan Province where the land climbs from 2,100 meters to a summit of 6,380 meters, and where the wind, on a bad day, gusts close to hurricane strength.

San Guillermo National Park: The Vicuña's Last Stronghold

Sun, 21 Jun 2026 00:00:00 GMT

The whole reserve exists because of a small, golden-fleeced animal that nearly vanished. The vicuña, the wild ancestor of the domestic alpaca and the most delicate of the Andean camelids, was hunted relentlessly for its prized wool. In 1972, the province of San Juan set aside thi...

San Guillermo National Park: A Pyramid of Predators

Sun, 21 Jun 2026 00:00:00 GMT

San Guillermo is one of the few places on Earth where biologists can watch an entire Andean food web operate in the open, with almost nothing to hide behind. Pumas hunt the vicuña and guanaco across the steppe. When a kill is made, the Andean condor descends, that vast black silh...

San Guillermo National Park: Cold, Dry, and Enormous

Sun, 21 Jun 2026 00:00:00 GMT

The landscape divides into two worlds. In the foreground stretches flat, grassy steppe, scattered with low forbs that flush green only in the warm months. Behind it rise craggy peaks armored in snow and ice, the tallest cresting above 6,000 meters. There are no trees of any size,...

San Guillermo National Park: Going In

Sun, 21 Jun 2026 00:00:00 GMT

There is no easy way to experience San Guillermo, and that is precisely the point. The nearest town with an airport and a bus station is the provincial capital of San Juan, roughly 200 kilometers south. From there the route runs north along Ruta Nacional 40, then west on a provin...