Death Valley is known as one of the hottest, harshest places on Earth—but what lies beneath its sands is even more unsettling ...

A recent study offers proof of feasibility for using cosmic radiation detectors to discover underground spaces. The detectors ...

The Boring Company's Jim Fitzgerald shared the latest tunnel updates with a group of Nashville business leaders on Sept. 29. Here's what he said.

Italy and Austria are on the verge of completing the longest underground rail tunnel in the world. The €10.5 billion ($12.3 ...

Part 34 of our Silksong walkthrough explains exactly where to go and what to do when you first begin the game's hidden Act 3 ...

The MTA is considering a system that would use the Earth’s subsurface to transfer heat out of subway stations and store it elsewhere.

Venus is often called Earth's "sister planet" because of their similarities in size, mass, and composition. Both are rocky ...

In a discovery that challenges long-standing views of prehistoric life, scientists have uncovered vast underground tunnels ...

The Earth Titanium Project, all 37.5 acres of it, is poised for a comeback. The push is being driven by the buyers association (UTCA), real estate veterans Splendor Group, no-nonsense support from ...

Sơn Đoòng Cave is the world's largest cave in Vietnam, featuring a jungle, a river, and towering chambers that reach over 200 ...

Celebrity vehicle though it may often be, Godot certainly isn’t easy. It attracts pairs of actors who know and love each other and who want to get down to some serious work. Winter and Reeves have got ...

GUIYANG, Sept. 28 (Xinhua) -- The world's highest bridge opened to traffic Sunday morning in southwest China's Guizhou ...