The Colourful Light Tunnel between St Pancras and Kings Cross Station, London England UK Stock Photo - Alamy
Clay Cross Tunnel - Wikipedia
Cross-border tunnel found in Otay Mesa; six people charged - The San Diego Union-Tribune
Hong Kong's Cross-Harbour Tunnel to reopen after two-week closure from protest chaos, while police team poised to enter wrecked PolyU nearby | South China Morning Post
Tunnel cross passages nearing completion | Sydney Metro