Two operational classic Gotthard locomotives of the 1950' in Erstfeld, with the Bristen mountain in the background. On the occasion of the "Fitness drives" we can see Ae 6/6 # 11411 "Zug" from 1955, built by SLM/BBC/MFO, and Ae 6/6 # 11402 "Uri", one of two prototypes, built in 1953.