Author Graham Hancock claims in a new book that a comet struck the earth 13,000 years ago and wiped out a highly advanced ancient civilisation.
Fingerprints of the Gods by Graham Hancock says that an ancient culture in Antarctica was obliterated by the comet, but knowledge from astronomy and mathematics were passed down to later civilisations.
Despite selling an estimated 3m copies, a BBC Horizon programme sought to demolish his theory.
Paul V Heinrich, a US geologist, wrote: “Rather than stumbling upon an archaeological mystery, he has merely created one.”
Now, 20 years later, he is set to publish a 500-page sequel – Magicians of the Gods – that he believes will prove his critics wrong.
Citing scientific and archaeological research, Hancock, a former journalist, told the Sunday Times: “In 1995, I wrote a book about all the clues — the fingerprints — that pointed to the existence of this lost civilisation.
“But what I lacked was a smoking gun. Now we have it.
“A series of papers in geophysics and geological journals have been bringing forward evidence that the Earth was indeed hit by a comet 12,800 years ago, which is exactly what I proposed in my book.”
Hancock argues that the existence of the comet has been masked because it struck ice and did not leave a crater.
But he acknowledges that many will ridicule his new book, which is to be published in September.