Journalist and writer Graham Hancock travels the globe hunting for evidence of mysterious, lost civilizations dating back to the last Ice Age.
He attempts to prove that a climatic event 12,000 years ago wiped out an entire civilization far more sophisticated than the simple hunter-gatherers some archaeologists believe lived at that time.
BBC iPlayer (free): no longer listed, by our checks of Thursday 15 October
From our streaming checks, last checked 17 Oct, 06:53 BST. "Expected" dates come from availability data, not the service; a "first detected" date is when a check first found it there, not its release date. See streaming releases this week in the United Kingdom.
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