St Moritz is the terminus of both the Albula Railway and the Bernina Railway. As the two railways are powered by different electrification systems, they meet at the same station, but operate on separate lines from separate platforms. The Bernina Railway leaves St Moritz station in an easterly direction, and crosses the Inn River on a long viaduct. It then passes through the long Charnadüra-Tunnel II, the longest tunnel on the entire route. The next station, Celerina Staz, is, at above sea level, the lowest point on the north side of the Bernina Pass. From there until Ospizio Bernina, the line will now climb almost continuously. After returning to the banks of the Inn, the line reaches the small station Punt Muragl Staz. At this point is the valley station of the funicular to Muottas Muragl, opened in 1907.