In 2005, a group of friends decided to explore a hidden cave near Provo, Utah. The cave entrance led to a narrow flooded tunnel only about three meters long, which explorers had to swim through while ...

Beneath the idyllic resort towns of Mexico's Yucatan Peninsula, daring explorers have uncovered a hidden world of grand chambers and twisting tunnels. The Ox Bel Ha, Mayan for 'Three Paths of Water', ...

NEW YORK (AP) — An underwater tunnel that passes beneath New York City’s East River sprung a leak Wednesday after a city contractor mistakenly drilled a hole through it, sending streams of water into ...

Every day, long-haul truckers and commuters pass through the George Wallace Tunnel, briefly slipping away from daylight and 40 feet underwater, until reemerging into downtown Mobile, Alabama. Since ...

Archaeologists discovered 8,000-year-old human remains in an underwater cenote cave in Mexico’s Yucatán Peninsula.

The Fehmarn Belt Tunnel, a €7 billion infrastructure project, is set to become the world’s longest prefabricated road and rail tunnel. Stretching 18 kilometers beneath the Baltic Sea, it will connect ...

The tunnel spurred politicians to advocate for underwater bridges in other southern cities and beyond. Palmer and Baker eventually designed tunnels for Harvey and Belle Chasse. Later, it was ...