Right: Rigi No. 7 works a shuttle service at the top of the mountain between Rigi Kulm and Rigi Staffel on September 11, 2021.
PATRICK WATERS
THE only working vertical boiler rack locomotive in the world returned to passenger service in 2021, to celebrate the 150th anniversary of the first rack line in Switzerland, the Vitznau-Rigi- Bahn which opened in 1871, just two years after the first rack line anywhere up Mount Washington in New Hampshire, USA.