Hidden Dino Island is the last known location on the LEGO Planet where Dinosaurs live.
Hidden Dino Island was discovered by Johnny Thunder, who found many different species of Dinosaurs that were long thought extinct. Soon after his discovery, the Adventurers began exploring it. To further their exploration and research, a research base was created and many scientists eagerly arrived on the island to study these species thought extinct.
Sam Sinister, seeing an opportunity for profit, enlisted the Big Game Hunters to help him take control of the island. His plan was defeated by the Adventurers, but his agents still operate in the region.
Dino Island is where the main Adventurers Headquarters is located. It contains a research base for studying dinosaurs, airfields for planes, a docks with several boats, as well as offices for the High Adventurers.