A unique beautiful and perfectly organized large steam locomotive tour from Zurich around the Säntis mountain of "Steam Adventure Tours". With triple traction of Eb 3/5 # 5819, A 3/5 # 705 and B 3/4 # 1367 (all of SBB Historic and based in Brugg), the 12 car train crosses the highest railway viaduct in Switzerland (99 meter high, 365 meter long, built from 1908 to 1910), the Sitter viaduct of the former Bodensee-Toggenburg-Bahn, today Südostbahn (SOB), near St.Gallen.
