Dino Deathtrap: The Pit of Death is what some scientists are calling it, others 'Dinosaur Pompeii'. Envision dinosaur corpses stacked one on top of each other, piled four to five high; But not just any dinosaursnew, well-preserved skeletons - many that have never been known before. A bizarre T-Rex ancestor, a triceratops ancestor, an ancient crocodilian, and nearly 40 more different species dating back 160 million years ago, a time when little is known about dinosaur history. National Geographic travels to western China with a team of paleontologists as they unearth answers to a virtual black hole in dinosaur evolution. Watch as the bones are examined, reconstructed and brought back to life, and slowly probe the mystery of what these dinosaurs were, how they died and what they can tell us about the Lost Age of the Dinosaurs.