Erytheia ("the red one") is one of the Hesperides. The name was applied to an island close to the coast of southern Hispania, which was the site of the original Punic colony of Gades (modern Cadiz). Pliny's Natural History (VI.36) records of the island of Gades: ""On the side which looks towards Spain, at about 100 paces distance, is another long island, three miles wide, on which the original city of Gades stood. By Ephorus and Philistides it is called Erythia, by Timæus and Silenus Aphrodisias, and by the natives the Isle of Juno."" The island was the seat of Geryon, who was overcome by Heracles.