Between Realp and Oberwald the line formerly crossed the Furka Pass, at a crest elevation of above sea level with a tunnel passing beneath the pass. This compares to a crest elevation of just above sea level in today's Furka Base Tunnel, which is long. The old line, the scenic route, which is very attractive to tourists, is operated by the Dampfbahn Furka-Bergstrecke (DFB) (Furka Heritage Railway) using veteran steam engines.