Tuesday 3rd November 8.00pm
The documentary series examining freak occurrences in the natural world concludes. In 1986, a mysterious natural disaster claimed the lives of nearly 2,000 people at a lake in Cameroon. Scientists initially believed an underwater volcanic eruption was to blame, until the evidence pointed them towards an astonishing new scientific phenomenon.
On 21 August 1986, disaster struck a remote corner of north-west Cameroon. Nearly 2,000 people dropped dead by Lake Nyos without any obvious signs of injury or struggle. The following day, news of the staggering scale of the tragedy reached the outside world.
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