Oh, very observant. This doctor is (was) also a glider pilot, and is now a microlight (Apollo Fox) pilot. The hat is good for both.
I was at that time (2000-2004) a professor at the medical faculty of the UAE University in Al Ain, and an ardent supporter of the Emirates Natural History Group in Al Ain, where my specialities were finding bronze age bones (!), and old airfields.
I am trying to write a history of aviation in the Gulf region.
Any idea of whose Twin Otters or even C130s were used?
I confirm we found no sign of a rig in the area, just abandoned trucks, a fuel bowser, gin bottles, ACs, and camels (dead and alive), etc etc.
PS: have a look at
http://l.garey.googlepages.com/home
if you really want to know.