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Mega-Structures of the Deep

Our modern day landscapes are littered with the remains of ancient superstructures. Now, cutting edge archaeology is beginning to reveal that this century's most exciting discoveries actually lie at the bottom of the ocean.

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  • Originally Aired January 28, 2008
  • Runtime 45 minutes
  • Content Rating United States of America TV-PG
  • Network History
  • Created January 30, 2017 by
    Administrator admin
  • Modified January 30, 2017 by
    Administrator admin