Location of Messak.

<p>a) The Messak is located in the Libyan Central Sahara (Fazzan); b) the Messak is a massif of sandstone that lies between two sand seas, the Awbari to the north, and Murzuq, to the south (source: Google Earth); c) view of the Messak from the south, close to the town of Jarma with excavations of the Garamantes Royal Cemetery by DJ Mattingly and team in the foreground. Sources: Images: Elevation map of Africa from Nasa (<a href="http://photojournal.jpl.nasa.gov/catalog/PIA04964" target="_blank">http://photojournal.jpl.nasa.gov/catalog/PIA04964</a>), detailed map of Fazzan adapted from Wikimedia Commons (<a href="http://commons.wikimedia.org/wiki/File:Libya_Topography.png" target="_blank">http://commons.wikimedia.org/wiki/File:Libya_Topography.png</a>); photo of Messak by M Mirazon Lahr.