This park takes its name from the Diaguita word for land without life. Visits here are a spectacular step – or drive, as the case may be – into a world of surreal rock formations, dinosaur remains and glowing red sunsets. The park is in some ways comparable to North American national parks such as Bryce Canyon or Zion, except that here, time and water have exposed a wealth of fossils (some 180 million years old, from the Triassic period).

The park’s museum displays a variety of fossils, including the carnivorous dinosaur Herrerasaurus (not unlike Tyrannosaurus rex), the Eoraptor lunensis (the oldest-known predatory dinosaur) and good dioramas of the park’s paleoenvironments.

The 630-sq-km park is a desert valley between two sedimentary mountain ranges, the Cerros Colorados in the east and Cerro Los Rastros in the west. Over millennia, at every meander in the canyon, the waters of the nearly dry Río Ischigualasto have carved distinctive shapes in the malleable red sandstone, monochrome clay and volcanic ash. Predictably, some of these forms have acquired popular names, including Cancha de Bochas (the ball court), El Submarino (the submarine) and El Gusano (the worm), among others. The desert flora of algarrobo trees, shrubs and cacti complement the eerie landforms.

From the visitor center, isolated 1748m Cerro Morado is a three- to four-hour walk, gaining nearly 800m in elevation and yielding outstanding views of the surrounding area. Take plenty of drinking water and high-energy snacks.