St. Matthew Island (phantom island) and H.C. Adams (1883) suggest that the error may have arisen from a confusion with Annobón Island, which lies at the same latitude but at 5°38′E longitude. St. Matthew Island (phantom island) St Matthew Island is a phantom island once thought to lie roughly one thousand kilometers northeast of Ascension Island in the Atlantic Ocean. It appeared on navigational charts until as late as the early twentieth century. It was supposedly located at approximately 2°S 8°W, and was alleged to have been discovered by the Portuguese on St. Matthew's Day 1516. It was shown and named on several maps going
Devil's Island famous being Captain Alfred Dreyfus. The prison system stretched over several locations, on the mainland and in the off-shore Salvation's Islands. Île Royale was the reception centre for the general population of the penal colony; they were housed in moderate freedom due to the difficulty of escape from the island. Saint-Joseph Island was the "Reclusion", where inmates were sent to be punished by solitary confinement in silence and darkness for escapes or offences committed in the penal colony. Devil's Island was for political prisoners. In the 19th century, the most famous such prisoner was Captain Alfred Dreyfus. In addition to