Tren de las nubes arriving at San Antonio de los Cobres station comming back from the "Viaducto La Polvorilla", this station is at 3950 msnm / 11850 ft above sea level.
#9731 crossing the bridge of the loop called "El Rulo", in this site the train climbs from 3105 msnm to 3125 msnm in a short distance ( 9315 to 9375 ft above sea level )