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
Gibraltar rock (candy) known by children as Gibraltar rock." Nathaniel Hawthorne “The Old Apple-Dealer”: “Across [from him] extends a board, on which is displayed a plate of cakes and gingerbread, some russet and red-cheeked apples, and a box containing variegated sticks of candy, together with that delectable condiment known by children as Gibraltar rock, neatly done up in white paper.” Gibraltar rock (candy) Gibraltar rock, Gibraltars, Gibralters of Salem Gibralter are an old-fashioned candy associated with Salem, Massachusetts in the United States. The Gibraltar was the first candy commercially sold in the United States. It is still being sold. The Salem Gibraltar was