Dinosaur-and-vehicle fun from bestselling Penny Dale - over 1 million Dinosaur books sold! One dinosaur, who is digging a very big hole is joined by more and more dinosaur friends as they work on a huge construction project. But what are they building? It's a huge, splashy swimming pool... and they made it themselves! The perfect picture book for young dinosaur and vehicle fans, with plenty of vehicle noises to join in with.