Hybras

From Artemis Fowl

Hybras was an island that the Demon Warlocks lifted out of time using a time stop spell and a volcano after the humans were at war with them. It was brought into limbo thousands of years ago, and was lifted back into time by Holly Short, Artemis Fowl, N°1, Qwan, and N'zall; but three years off course. It was sunken by the Hybras Sinking Facility for security.