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Untold: The Invisible Tsunami That Killed 1,500 People in One Night

11 minutes 27 seconds

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On August 21, 1986, violent explosions rocked Cameroon’s Lake Nyos. A wave of water over 15 meters high flattened vegetation along the southern shore, but a second deadly, nearly invisible wave of carbon dioxide blanketed the nearby towns, suffocating residents and animals. In this episode, host Alex Dainis investigates how a lake could explode and a gigantic wave of deadly carbon dioxide gas could escape. Part of "Untold" series.

Media Details

Runtime: 11 minutes 27 seconds

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Episode 1
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Episode 2
15 minutes 40 seconds
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Episode 3
11 minutes 27 seconds
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Episode 4
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Episode 5
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Episode 6
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Episode 7
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Episode 8
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Episode 9
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Episode 10
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