Air

[@AnotherAlly]

The excitement never ends in the manhole. :)

[@paulnagy1546]

😅

[@maikerumine]

Is this a conduit housing? how did it get so pressurized?

[@jerrysmiddlefinger930]

Any other context to this?

[@northvilletunnels]

Not really. I used to work in the "air pressure" crew of a large telecom company. I was just showing how the phone cables are pressurized.