almost exactly opposite in a geographical sense, is the Rub' al Khali (The Empty Quarter): https://en.m.wikipedia.org/wiki/Rub%27_al_Khali https://en.m.wikiped

almost exactly opposite in a geographical sense, is the Rub' al Khali (The Empty Quarter): https://en.m.wikipedia.org/wiki/Rub%27_al_Khali https://en.m.wikipedia.org/wiki/Rub%27_al_Khali i don't kid. it's huge, and mainly empty. I first read about it in an English children's novel about Arabia, as a kid.