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

Climb through a perfectly carved tunnel above Cusco made directly into solid bedrock with unknown ...

Once completed, the Tonnelle Avenue site will have one of the shafts to launch two tunnel boring machines that will drill through rock in the Palisades. A separate shaft is being built at the ...

The Gotthard Base Tunnel is more than just a long passage through rock. Engineers had to overcome significant geological challenges, including high rock pressure, underground water and temperature ...

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.

Once completed, the Tonnelle Avenue site will have one of the shafts to launch two tunnel boring machines that will drill through rock in the Palisades. A separate shaft is being built at the ...

It can be all too easy to heap accolades upon Oregon’s most beautiful places, but this time we really, seriously mean it.

"Around three km are covered through bridges and four ... are water ingress and soft squeezing rock which try to obstruct them from digging a tunnel in the Himalayas. Once a TBM is stuck inside ...