https://www.good.is/they-just-finished-digging-the-world-s-longest-tunnel/
They Just Finished Digging the World's Longest Tunnel - Good.is
Feb 2, 2026 - When Swiss engineers aren't burrowing out spaces for large hadron colliders, they're off digging train tunnels. Really, really long train tunnels.
world s longest tunneljust finisheddigging