These are two of George Steinmetz masterpieces and if you want to see more go to his site. There you will also find a text he wrote about his work. This is the beginning:
"I became captivated by Arabia's Empty Quarter as a young man when I read Wilfred Thesiger's Arabian Sands. The Empty Quarter is larger than France without a single permanent point of water or human habitation. It's both the world's largest sand sea and one of the hottest places on earth, and has only been traversed a handful of times. I didn't want to repeat Thesiger's epic journeys many decades later, but when I discovered motorized paragliding I found a way to visualize this remote landscape in a new way. ..."
(read more here)