This underground natural wonder is an amazing spectacle that resembles the awe-inspiring cascades of Niagara Falls within ...

"Our initial research focused on mapping and surveying for archaeological artifacts within the spring tunnel. Cave pearls, a rare type of speleothem, were not the primary objective of our ...

A large gang of men worked all Saturday night and all day yesterday shoring up the sagging elevated structure, which was weakened by the cave-in of the East River tunnel in Battery Park on ...

Researchers have found a "unique" collection of "cave pearls"—some of which contain archaeological artifacts—in an ancient tunnel, a study has reported. Cave pearls are a type of "speleothem ...

Researchers from the Hebrew University of Jerusalem uncovered rare cave pearls containing man-made objects within an ancient subterranean water system near Jerusalem. Their findings were recently ...

But some explorers have found the very protective streak that guards the tunnels can also exclude the urban exploring, or urbex, community. “People are very territorial. They’re like, ‘This is my cave ...

China has completed the construction of the world's longest express tunnel through the Tianshan Mountains, according to a local news source. The Tianshan Shengli Tunnel is just over 22 kilometers ...

By removing the need for ferries, the tunnel will slash 11 hours from a 21-hour journey on Norway’s E39 coastal highway, which runs from Trondheim, in the far north, to Kristiansand, in the south.

A drone helped Mexican state police find a tunnel that went underneath the border wall in San Luis. The tunnel was secured and closed in a joint operation between the Secretariat of Public ...

The Boston tunnel was filled with 130,000 gallons of stormwater runoff this week after a torrential downpour led officials to close the historic city's roadways. Video shows people slowly driving ...

With an estimated cost of $19.8 trillion, the tunnel could significantly outpace air travel. Imagine being able to commute between the United States and the United Kingdom in less than one hour.