The spectacular rock formations and canyons of this dusty desert national park are evidence of the erosive action of water; these days it's hard to believe that existed here. The sandstone cliffs are amazing, as are the distant surrounding mountainscapes. You must enter by guided visit, arranged at the visitor center. The standard 2½-hour (AR$360) trip is in a comfortable minibuses and there’s little walking involved; nevertheless, take water and protection from the fierce sun.
For a little extra, you can extend the visit to another nearby canyon or do the route on the roof of a truck. Other visits include farther-flung valleys and other parts of the park. Guided walks (AR$300 to AR$400) and trips on bicycles (AR$400) are also available; a more appealing way of exploring if the heat’s not too intense, though you'll still likely have to pay for transport into the park if you're on foot. There are night excursions (AR$350) when there's a full moon. Be aware that different excursions are operated by different companies, so it can be difficult to get the full information on what's available.
