In the 1930s, workers bored a 13-mile tunnel beneath Mt. San Jacinto. Here's a look inside the engineering feat that carries ...

State officials finalized a landmark agreement with Union Pacific Railroad that modernizes a century-old lease for the Moffat ...

The ore veins looked rich, but miles of costly road would have been needed to get the ore around the mountain to a shipping point. Lacking capital, William Schmidt decided to tunnel through the ...

Wearing a red hard hat and carrying a backpack with an emergency oxygen tank, I’m sweating as I get a rare look at the newest wonder of the world—the 35.4-mile Gotthard Base Tunnel ...

The 13-mile-long San Jacinto Tunnel was bored through the mountain in the 1930s by a crew of about 1,200 men who worked day and night for six years, blasting rock and digging with machinery.

Scott Reierson, an operations and maintenance supervisor for the Metropolitan Water District, leads a group on a tour, walking through a 16-foot-diameter tunnel toward the west portal of the ...