Rock of Gibraltar may have originated from an escape of North African animals transported to Spain; it is also possible that the original Gibraltar macaques are a remnant of populations that are known to have spread throughout Southern Europe during the Pliocene, up to 5.5 million years ago. Some animals of the Rock have been reintroduced by the Alameda Wildlife Conservation Park who have three Barbary macaques. The Rock of Gibraltar, at the head of the Strait, is a prominent headland, which accumulates migrating birds during the passage periods. The vegetation on the Rock, unique in southern Iberia, provides a temporary home for
The Monkey Bible the human species from extinction. The Monkey Bible novel is part of the overall Monkey Bible Project. Each book sold includes "The Line", a musical album by singer/songwriter Eric Maring. After Laxer shared an early draft with Maring, Maring was inspired to write an accompanying acoustic rock musical. Laxer subsequently rewrote parts of the novel based on "The Line"'. The Monkey Bible Project includes a multimedia staged theatrical performance called The Monkey Bible Show, YouTube videos, and live virtual ecotours (vEcotourism) from around the world using a technology invented by the novel’s protagonist, the Teaching Evolution Project. It also includes