There is a gap of about 15 meters only between the 969 meter long Bärentritt tunnel and the 450 meter long Wiesen I tunnel in the Zügen gorge. A short bridge over the Brüggentobel creek (waterfall) is between the tunnels. Railcar ABe 4/4 # 501 of the RhB from 1939 stopped for the participants of a privately organised RM photo charter train.