Walking with Dinosaurs

Narrator:
It is the end of the Cretaceous period and the continents are taking on their modern forms. But this ceaseless movement of the Earth's crust has also produced a surge of volcanic activity across the globe. :[A volcano puffs out smoke] Massive eruptions that have lasted for centuries have laid waste to landscapes and have filled the atmosphere with poisonous gases and debris. This desolate world is still ruled by dinosaurs, as it has been for a hundred and sixty million years but they are nearing the end of their reign. Life on Earth is chocking to death.