What on Earth? · S9 · E5
America’s Swamp Castle
Images reveal a forgotten war-torn fortress in the swamplands of Louisiana.
About this episode
Images reveal a forgotten war-torn fortress in the swamplands of Louisiana.
Season 9
1Curse of the Amazon Nazis
44 minMar 11, 2021
Experts follow evidence of a Nazi base in the Amazons to a dark discovery.
2Epstein’s Forbidden Temple
44 minMar 18, 2021
Satellite images capture a mysterious building on Jeffrey Epstein’s island.
3Aztec Alien Mystery
44 minMar 25, 2021
Images reveal an alien substance in the land of the Aztecs.
4Gate to the Viking Gods
44 minApr 1, 2021
New evidence reveals a Viking portal to their spiritual realm.
5America’s Swamp Castle
44 minApr 8, 2021Now viewing
Images reveal a forgotten war-torn fortress in the swamplands of Louisiana.
6Lost City of the Vampires
44 minApr 15, 2021
Experts uncover a gravesite with the remains of possible vampire burials.
7Temple of the Island Eater
44 minApr 22, 2021
A mystery in Hawaii points to human sacrifice and a shape-shifting god.
8Horror of Dead Man's Island
44 minApr 29, 2021
Satellites lead experts to an island that may be linked to a massacre.
9Stalin's Secret Atlantis
44 minMay 6, 2021
When experts spot what appears to be an abandoned city in the Caspian Sea, they investigate declassified Cold War evidence to reveal an Atlantis-like city built by the Soviets; what they find exposes its long-lost secrets.
10America's Secret Apocalypse
44 minMay 13, 2021
Satellites capture evidence of catastrophic and secret military testing.