Huge ancient underground tunnels have been discovered in Brazil and Argentina, and the source of these huge structures is not believed to be due to humans or natural geological processes. Reaching ...

BOSTON (AP) The outside engineer who led an investigation into leaks at the $14.6 billion Big Dig project says he can no longer vouch for the safety of its tunnels. Gov. Mitt Romney responded by ...

The Boring Company delivered a 17-page letter to Nashville Mayor Freddie O'Connell, responding to 79 questions about the planned Music City Loop.

National Briefing: New England: Massachusetts: Big Dig Leaks Found Water continues to leak steadily into a Boston Big Dig tunnel, an independent analysis shows, despite claims by officials of the ...

Sound Transit contractors are tunneling under downtown Bellevue, but you won’t find a big tunnel-boring machine like Seattle’s Bertha. The light rail tunnel will connect the East Main light rail ...

Palestinian “heroes” are digging tunnels to be used in future attacks on Israel, Hamas’ senior political leader said. At a funeral in Gaza City Friday for seven Hamas operatives killed when rain and ...

Left in Bertha’s wake, crews have been constructing a living, breathing SR 99 under Seattle. “It’s really a large mechanical plant,” said Brian Russell with HNTB Corporation. “Within that facility ...

WASHINGTON — Drug tunnels are not a new problem at the Southwestern border, but authorities say the number of sophisticated tunnels may be. Since November 2010, authorities have seized four complete ...