It's the main road, in the north of Argentina, between Chile and Argentina.
Note: the road has sections with a height above 4,500 meters and even in summer it can snow.
Road varies from good gravel to no road at all. There are no petrol stations between Uyuni and Calama. The Bolivian border station may not be manned so get an exit stamp the day before in Uyuni. This track is too far to do in a single day unless youre very fast off road but there are gues...
Ruta de 320 km aproximadamente donde solamente hay 73 de tierra entre
Pica y Salar de Guasco, se debe conducir con precaución porque hay sectores
con arena, en Pica hay que cargar combustible y llevar harta agua, la altura
bordea los 4000 msnm