
-more than 100 meters UNDERGROUND.
-So, Bernardo?
Money Heist Season 3, Episode 8

Twenty-eight miles
of reinforced pipes UNDERGROUND.
Money Heist Season 3, Episode 2

Tell the Underground Unit
to canvass the sewerage system
Money Heist Season 1, Episode 7

even in the UNDERGROUND ventilation ducts.
Money Heist Season 1, Episode 11

the UNDERGROUND unit have found
oscillations on the seismograph.
Money Heist Season 1, Episode 11