This tiny standard gauge steam locomotive # 3 ZEPHIR was built in 1874 by Krauss in Munich for the 8,2 km long Bödelibahn from Interlaken to Bönigen, was later works locomotive in the aluminum works in Dornach, and belongs now to the Swiss Transport Museum in Lucerne, but is based in Delémont. In this year she is the oldest operational steam locomotive in Switzerland and is operated by the Association HEG (Historische Eisenbahn Gesellschaft). Weight is 15 tons, power about 90 HP and velocity 25 km/h.
