They are digging a two-mile-long tunnel to help keep millions of gallons of raw sewage out of nearby waterways. And they have a lot of help: a massive drill named “Hazel” that weighs 380 tons ...

A Virginia woman known on the internet as "Tunnel Girl" has put her viral underground tunnel on pause after the town shut down construction following a violation notice.

It came just a day after the machine’s platform became destabilized and halted operations. The 25-tonne platform was reinforced with concrete and drilling resumed, but the machine broke down again.

He told WIRED, “If you think of tunnels going 10, 20, 30 layers deep (or more), it is obvious that going 3D down will encompass the needs of any city’s transport of arbitrary size.” ...

The tunneler, known as “Tunnel Girl” by some fans online, said in a phone interview this month that her tunnel had a 30-foot entrance and a main chamber 22 feet below ground.

There’s no shortage of work out there, either. China recently completed a 20-kilometer railway tunnel in the Longmen Mountains after a decade of construction. There’s the HS2 rail project in ...

Workers began digging an access tunnel Monday 55 feet below Lexington Ave. at E. 42nd St. MTA officials hope the tunnel will allow crews to expand the passageway between the No. 4, 5, 6 platform ...

Hand Tools Before there were explosives and tunnel-digging machines, workers used hand tools to carve tunnels. First used in a tunnel around 2000 B.C., to mine copper, gold, and salt from ...