IN THE MOUNTAINS ABOVE the Lötschberg Base Tunnel, the original Lötschberg Tunnel continues to serve as a relief valve for traffic through the lower route, as well as a shortcut for drivers.
The older tunnel, built between 1907 and 1913, is 14.6 kilometers long (just over 9 miles). It connects Kandersteg on its north end and Goppenstein at the south, with portals at 1,200 meters (3,937 feet) and 1, 216 meters (3,990 feet) respectively. Its summit, at 4,070 feet, is the highest point on the main Swiss rail network. In October 2024, BLS finished a six-year, 180 million franc ($198 million) project to increase clearance and to convert it to the same sort of direct-fixed track structure as the base tunnel.
BLS operates hourly passenger trains via this route; it also sees six…