Dinosaur Expedition

When enormous footprints appear in the snow near North Pole Village, Ellie Hart knows something is wrong. An ancient map, a vanished supply sled and warm mist rising beyond Frostglass Ridge lead Ellie, Milo, Sienna and Theo into Fernshadow Valley — a hidden world where dinosaurs still live. But the dinosaurs aren’t the danger: someone with powerful drilling machines is tearing into the ground beneath the nesting fields, and the whole valley may collapse unless four friends can stop it. An adventure of courage, teamwork and discovery for readers ages 6–12.