In order to satisfy tourist demand, construction of the Wengernalp railway across the pass commenced in 1891, and the line opened in 1893, as a steam hauled summer only service. The line was electrified in 1909/10, and year-round operation started in 1925 (to Lauterbrunnen) and 1960 (to Grindelwald). Construction of the Jungfrau railway started in 1896, and it opened in stages from 1898 to 1912.