Join Horridus the Triceratops and Archie the Avisaurus on their Cretaceous quest to unlock the secrets of Hidden Valley. Along the way they’ll encounter lakes, mountains, Tyrannosaurs, Pterosaurs and a distinct lack of decent snacks. 

Will they find the rare blue flower? Will Horridus eat it? Enter a prehistoric world of adventure to find out! 

Threaded with themes of friendship and conservation and filled with humour, this story will entrance any young dinosaur fan. Readers will delight in learning about the Cretaceous period as they accompany Horridus and Archie on their adventures.