Plot

Before man ruled the world, Earth was a land of giants. Count down the biggest beasts of their kind to ever roam the planet in this eye-opening original special, and uncover the secret lives of these super-sized species. Birds with plane-length wingspans, dinosaurs rivaling a Boeing 737; this stunning CGI special goes in search of the truth behind these monsters, counting down the ten largest and most extraordinary finds. From handling the recently unearthed bones of a dinosaur far larger than previously known, to analysing the flight technique of a giant seven-metre bird -uncover the unique adaptations that allowed each animal to thrive. Visual stunts and surprising size comparisons bring each beast vividly back to life in ever-increasing sizes. Get ready for a dramatic countdown of the most mind-blowing lost giants.—National Geographic

Prepare for a dramatic countdown of the top ten biggest beasts of their kind to ever roam the planet in this original eye-opening special, and uncover the secret lives of these super sized species. This stunning CGI special goes in search of the truth behind these monsters, using visual stunts and surprising size comparisons bringing each beast vividly back to life in ever-increasing sizes.—National Geographic