Home / Series / Abandoned Engineering / Aired Order / Season 3 / Episode 2

The Underwater Prison

An abandoned prison beneath the water, a tunnel in the heart of a mountain, concrete towers hidden in the woods and a rusting coastal relic.

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  • Originally Aired April 2, 2019
  • Runtime 45 minutes
  • Network U&Yesterday
  • Created May 10, 2019 by
    Administrator admin
  • Modified January 30, 2022 by
    sifonen