Siderus, Beydağları Coastal National Park

Siderus was a port town of ancient Lycia, referenced in the Periplus of Pseudo-Scylax and the Stadiasmus Maris Magni. The town is also noted by Stephanus of Byzantium under the name Sidarus or Sidarous. The place may also have borne the name Posidarisus or Posidarisous, mentioned in The Chronicon of Hippolytus as being 30 stadia from Crambousa and the same distance from Moron Hydor. ()