Patmos in Smiths Bible Dictionary

Re 1:9 a rugged and bare island in the AEgean Sea, 20 miles south of Samos and 24 west of Asia Minor. It was the scene of the banishment of St. John in the reign of Domitian, A.D. 95. Patmos is divided into two nearly equal parts, a northern and a southern, by a very narrow isthmus where, on the east side are the harbor and the town. On the hill to the south, crowning a commanding height, is the celebrated monastery which bears the name of "John the Divine." Halfway up the descent is the cave or grotto where tradition says that St. John received the Revelation.