The Great Sand Sea situated in Western Egypt the third largest sand-accumulation in the world
The Great Sand Sea of the eastern desert; an unbroken mass of dunes the size of New Mexico which smothers the barren frontiers of Libya and Egypt and is home to not one living soul. Parallel dune ridges run north-south for hundreds of miles, and anyone journeying here has to be exceptionally well prepared, as there's not a single well or water source in 150,000 square miles--extreme even by Saharan standards.
Until the 1930s, this hyper-arid region had barely been explored, but during WWII, clandestine German and British desert patrols, including Count Almasy, aka The English Patient, probed this remote area, spying on each other's movements. Today, the area still remains largely unknown and is so rarely visited that 60-year-old tire tracks are still visible on certain surfaces.
The Great sand sea Spanning the 600km between Siwa in the north and the Gilf Kebir Plateau in the south, the Sand Seaforms a natural barrier between Egypt and Libya. From west to east, this barren but extremly beautiful land is about 250km wide, though it reaches 400km in the south. Nothing lives here but the wind, and nothing moves here but the sand.