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
Death on the Rock did not seek to present it as the only possible version of events. The second was that the programme might have contaminated the evidence presented at the inquest, as witnesses might have been tempted to give false or embellished accounts for the television. The report dismissed this concern; the authors believed that all the eyewitnesses gave honest accounts of what they believed they saw, and pointed out that three had given statements to the Gibraltar Police and two had been interviewed by Gibraltarian and British newspapers prior to being interviewed for "Death on the Rock". Overall, Windlesham and Rampton found