Empty Quarter - Satellite Photography Size:83 x 90 cm The prominent crimson streak in

The prominent crimson streak in the center of this image represents the remains of an extensive lava and mud flow

circular shapes near the top of the image

On the border between Chili and the Catamarca province of Argentina lies a vast field of currently dormant volcanoes

Joseph Cotten

Empty Quarter - Satellite Photography Size:83 x 90 cm The prominent crimson streak inWhite pinpricks of cloud cast ebony shadows on the Rub' al Khali, or Empty Quarter, near the border between Saudi Arabia and Yemen. The lines of wind sculpted sand are characteristic of immense sand deserts, or sand seas, and the Rub' al Khali is the largest desert of this type in the world. A highland ridge is just high enough to disturb the flow of the lines. In the center of that interruption lies the Saudi Arabian town of Sharurah.