English: The darker-colored area extending diagonally to the right down the center of this Space Shuttle image is Harrat ar Rahah, the northernmost of a series of Quaternary volcanic fields paralleling the Red Sea coast of Saudi Arabia. The geometrical outlines of the historical town of Tabuk (top-center), located on the road leading from Hijr to Damascus, can be seen to the north. There are fewer young volcanoes in Harrat ar Rahah than in other harrats (lava fields) to the south.