Secrets of the Underground S1E4
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Secrets of the Underground
S01E04 — Rocky Mountain Monsters
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Secrets of the Underground

S01E04 Rocky Mountain Monsters

2017-03-07

Rob Nelson looks into a series of unusual markings that indicate a fierce battle among ancient creatures. Meanwhile, in California, he explores the possibility that a mysterious lake could harbor extraterrestrial life.

Season 1 Episodes

1
Capone's Escape Tunnels
2017-02-14
 2
Mystery of the Serpent Mound
2017-02-21
 3
America's Buried Massacre
2017-02-28
 4
Rocky Mountain Monsters
2017-03-07
 5
Great Lakes Bermuda Triangle
2017-03-14
 6
California's Hidden Doomsday
2017-03-21
 7
Secret History of the New World
2017-03-28
 8
American Stonehenge
2017-04-04