Pick up your (included) three-color viewing lens and dive into history with this illuminating guide to Triassic, Jurassic and Cretaceous periods. Kaleidoscopic views of three different layers are available: the green lens shows you location, your red lens reveals the beasts that roamed the land during that time, and your blue lens lights up the wildlife surrounding the dinosaurs. This beautiful and fact-filled guide will help you explore a world we never got to see!