Hey Hugh, I spent some time in Libya too during the 1970s. We were located about 50 miles north of the Kufra Air Base. I saw a bunch of camels, but no gazelles!! Some friends and I spent one warm afternoon (about 125 F) searching for the "Lady Be Good" B-24 Wreck, but no luck. We did have a good time trying to climb some sand dunes!!
I was hoping to find the left overs of an encampment of any kind, but no luck there either. Oh well, the Sahara was a pretty neat place. I didn't mind the visit, but I wouldn't want to live there!!