Dippy the diprotodon is the BIGGEST and friendliest wombat who lived 100,000 years ago. Dippy has dug a new hole. A BIG hole, which leads him to a strange new world - and even stranger new friends. But do these giant creatures really just want to play? Based on a concept by Ben Smith Whatley and brought to life by the creators of the internationally bestselling Diary of a Wombat, this is an hilarious story of prehistoric daring and chaos set in the fascinating world of ancient Australian megafauna.