U.S. agents and Mexican authorities discovered a large, “sophisticated” tunnel near the U.S.-Mexico border that was outfitted with electricity, ventilation, a rail system with a cart and an electronic ...

I walked into one such cave in southern Iceland, delicately through a tunnel of circular ice arches. They towered over me at roughly 6 meters (19.5 feet) high, covered in long, frosted icicles.

But outside its scientific mission, Camp Century was also an experimental site for Project Iceworm, a secret plan to create a wide-ranging tunnel network beneath the ice that could hold some 600 ...

NEW JERSEY — Frigid temperatures and ice caused delays for NJ Transit train ... which shares the tunnel with Amtrak. Riders on several lines were impacted: Main-Bergen County, Montclair-Boonton ...

The UK’s HS2 has announced a significant milestone at Long Itchington Wood Tunnel in Warwickshire – the first deep ... with each ring made from eight two-metre-wide segments, each weighing up to 8 ...