What on Earth?

What on Earth?

America's Swamp Castle (9x5)


: 08, 2021

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.

  • : 2015
  • : 163
  • : 23
  • Science Channel
  • 21