The Sanctuary Island was a supposed island sanctuary that the Isla Nublar dinosaurs would have been taken to in response to the catastrophic eruption of Mt. Sibo, had the United States Congress decided not to intervene in the destruction of Isla Nublar. This island had supposedly been purchased by Eli Mills, who was the manager of Benjamin Lockwood’s estate and fortune. The island itself was of considerable size, with most of its coast made up of a large cliff that sloped to an ocean lagoon lined by a half circle of satellite islands. The island was ringed by mountains, and the lagoon had sandy beaches. Whether or not this island actually existed, or if Eli Mills had been lying about its existence and purchase is unknown.