#9724 with the famous train "tren a las nubes" in the La Polvorilla Viaduct located at 4220 msnm / 12660 ft above sea level, the highest point of the route.
#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 )