Home / Series / What on Earth? / Aired Order / Season 9 / Episode 5

America's Swamp Castle

Satellite images capture bizarre structures in the remote and inhospitable swamplands of Louisiana; experts investigate a forgotten war-torn fortress with a mysterious connection to the sinking ruins of a classified military installation.

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  • Originally Aired April 8, 2021
  • Runtime 42 minutes
  • Network Science Channel
  • Created April 2, 2021 by
    Administrator admin
  • Modified April 13, 2023 by
    Buguicrack