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 into the stunning multi-coloured Quebrada de Toro to Ingeniero Maury, where our hike begins. It's 90 minutes drive each way: the...