Simav Graben
The Simav Graben is a graben around the town of Simav, in Kütahya Province of Turkey. It is a roughly east–west structure between two mountain ranges on the north and south. The graben formed sometime after the Miocene period, possibly during the Pliocene or Quaternary periods, and has since been filled in with a thick layer of sediment during the Quaternary period.