Archaeologists Discovered a Mysterious Ancient Tunnel System. They Can’t Explain It.

The unexpected discovery happened during a routine excavation in Jerusalem.

Mysterious airport tunnels to open beneath hub long tied to conspiracy theories

Denver International Airport will open its mysterious underground baggage tunnels, long associated with conspiracy theories, to travelers as pedestrian walkways. Construction starts in 2027.
WESA

ALCOSAN wants public input on a massive tunnel system to reduce sewage overflow

The Allegheny County Sanitary Authority has released new details about a 16.5-mile tunnel system to be built under Pittsburgh and the three rivers to better manage sewage and stormwater runoff. The ...
WKRN-TV

Utility tunnels hidden just below Nashville’s surface

NASHVILLE, Tenn. (WKRN) — The Boring Company’s Music City Loop might be Nashville’s most talked-about tunnel right now, but it’s far from the only noteworthy infrastructure just under the city’s ...