Veteran broadcaster and naturalist, Sir David Attenborough, will explore how dinosaurs came to be extinct in a new documentary for the BBC.

He will look at some of the fossil finds from a new dig site at a secret, prehistoric graveyard hidden in the low hills of North Dakota, known as Tanis, for the one-off film Dinosaurs: The Final Day, with David Attenborough.

The fossilised creatures at the site, dating from the very end of the Late Cretaceous period and buried in a crumbly layer of rock, are preserved in such detail that they could help offer a clearer picture of the time just before an asteroid wiped out the dinosaurs.

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New VFX production techniques will be used to immerse Sir David in the Late Cretaceous and bring the creatures which lived at Tanis to life.

Sir David said: “Dinosaurs were among nature’s most extraordinary creatures, dominating the planet for over 150 million years before they became extinct.

“Tanis could be a place where the remains can give us an unprecedented window into the lives of the very last dinosaurs, and a minute-by-minute picture of what happened when the asteroid hit.”

:: Dinosaurs: The Final Day, with David Attenborough will be on BBC One and iPlayer later this year