Denver International Airport builds new underground tunnels: Here’s what’s inside

DENVER ( KDVR ) — Conspiracies around Denver International Airport’s underground tunnel system have been popular for decades , but these newly built tunnels aren’t much of a secret.

The airport announced the ongoing construction of the West Gates Pond Expansion project on Tuesday. While this project involves building tunnels over a mile long, it’s not for an underground bunker .

The airport said it just finished building a 2,050-foot by 11-foot diameter tunnel that runs beneath one of the runways and surrounding taxiways. The project involves six tunnels of various sizes, amounting to 5,179 feet .

Here’s a look inside the construction:

The airport joked on X that it’s not a secret portal to the underworld, a hole dug by Camp Green Lake or a summoned sandworm . Ultimately, the airport said the tunnels will upgrade the aircraft deicing fluid collection system, helping the airport with winter weather.

The airport said the construction would include new storage ponds and deicing pads that should improve the management of storm water and deicing fluid.

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