Took the bus from San Antonio de los Cobres and had the driver drop us off at the best point on the road. Hiked cross country and on old roads towards the mountain through beautiful fields. Camped at end of derivable road (we didn't have a car). Ascended to summit, with upper mountain covered in 6-8 inches of fresh snow. This was a great way to acclimate more and prepare for the Cordillera Real!
"For my first climb at more than 5500 m, that has been an epic story ! After 30 minutes my local guide collapsed due to sorroche (faintness due to altitude). I had, thus to do the climb with the young french people (Alix & Charles) that were with me till the midst of the ascent (where they stopped)and then continue all alone. At the summit I met a group of local guides that went up from an other side of the mountain. These moments were tough but magical. The descent have been quick (1,5hrs) and funny comparing to the climb (8,5hrs). I recommend the Nevado de Acay for the healthy people who want a first experience of a high altitude climb. Guides can be hired in almost every tourism agencies in Salta (Argentina)."