OVERVIEW: This 1969 CORONA image shows the Euphrates River running north (top) to south. The large plateau adjacent to the river on the left is Jebel Khalid, where a team from the Australian National University has been excavating for several years. Several structures and grid patterns are clearly visible. These were known prior to the use of the CORONA image, and relate to the period when the site was used as a fortress by Hellenistic colonists. Credit: CORONA, ANU, David Menere