This is a tough 7-9km hike through stunning and rugged high altitude scenery: suitable for the experienced and adventurous trekker! From Salta city, we travel to Campo Quijano, a town famous as the base for workers constructing the Train to the Clouds railway line to the Chilean coast. We can stop to see an antique engine and the mausoleum of the train line's chief engineer, Richard Maury, from Philadephia, USA. From here we will climb...