Abstract: A fragment of the seventh book of Strabo’s work Geography contains too important information about the historical geography of the lands along the valley of the Strymon River. Among other information, reported by Strabo, this ancient author has also provided us with very valuable but extremely concise information about four ancient settlements located in the geographical area named Parorbelia. The four ancient settlements mentioned by Strabo in a series – Kallipolis, Orthopolis, Philippoupolis and Gareskos, located in the middle of the Parorbelia, in a valley that begins from the ancient settlement Eidomene, have provoked a number of scholarly debates. Many modern researchers have tried to search and suggest different possible loc...