Lord Snow here recommends
sealing the TUNNEL,
Game of Thrones Season 4, Episode 7
Are the stewards responsible
for maintaining the TUNNEL?
Game of Thrones Season 4, Episode 7
Once you make the hole
to connect the TUNNEL to the factory,
Money Heist Season 1, Episode 8
We’ll exit through another TUNNEL.
Money Heist Season 1, Episode 8
Cold, gloomy, and easily accessed by
a Frenchman through a TUNNEL.
The Big Bang Theory Season 9, Episode 8