Baffling mysteries await in the next episode, featuring eerie barren rings in the Namib Desert, a Manhattan-sized island that vanishes without a trace, and a hidden city deep in the Amazonian jungle.
Aired: Feb 10, 2015A colossal tsunami hangs suspended, its fury held in check, while a mysteriou...
Aired: Feb 17, 2015Baffling mysteries await in the next episode, featuring eerie barren rings in...
Aired: Feb 24, 2015The enigmatic Eye of the Sahara, a massive 25-mile structure, has continued t...
Aired: Mar 3, 2015A NASA astronaut's discovery of a ring-shaped formation in Lake Baikal's ice ...
Aired: Mar 10, 2015Next episode's gripping plot: A sudden smoke screen in North Korea sparks mil...
Aired: Mar 17, 2015A satellite image uncovers a breathtaking phenomenon in the Australian outbac...
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Seasons: 12
Network: Science
Production Country: United States
Genres:Documentary
