Weissenstein Tunnel
The 263rd longest tunnel in the world
The Weissenstein Tunnel is a 3,701 metres (12, 142 ft) long, single-track railway tunnel on the Solothurn–Moutier railway line, built by the former Solothurn-Münster-Bahn. It passes under the 1,395-meter-high Weissenstein as a Jura crossing. Renovation of the tunnel took place from March 2024 to May 2026.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).