Two trains on the Gotthard north ramp at the 1476 meter long Pfaffensprung spiral tunnel between Gurtnellen and Wassen. On the upper level a southbound intermodal train with a "Re 10/10" (Re 4/4 II and Re 6/6 in multiple control), leaving the short 53 meter long Muhren tunnel. On the lower level, the northbound Interregio 2276 from Locarno to Zürich with locomotive Re 4/4 II, is leaving the Pfaffensprung spiral tunnel. The travel time between the positions of the trains is about 1 1/2 minutes, the hight difference about 50 meters.
