Four award-winning, massively popular Walking With... programs now in one monster set! Explore the amazing worlds before o own with the Ultimate Dinosaur Collection! Take a journey back hundreds of millions of years to a time when monsters roame the primordial seas and forests with Walking With Monsters, discover how dinosaurs moved and looked with Walking with Dinosaurs, follow the life and death struggle of one dinosaur who really existed in Allosaurus, and go back in time with zoologist-adventurer Nigel Marven to be Chased By Dinosaurs! Each program is a virtual lost world which has been recreated with spectacular digital effects and animatronics. The end of their era is only the beginning!