Taken in February 2004 on assignment for National Geographic, this photograph shows a unique aerial perspective of The Empty Quarter, the world's largest sand desert. George Steinmetz took the picture looking straight down while piloting his motorized paraglider near Wadi Mitan, a remote part of Oman close to where Saudi Arabia, Oman, and Yemen meet. Since it first appeared in National Geographic, it has been included in numerous additional publications and exhibitions. 20'' x 16''.