Desert Rub’ Al-Khali Is the Largest “Sand Sea” in the World, but It Was a 138-Foot-Deep Thriving Lake 8,000 Years Ago Earth has gone through a multitude of changes. Tectonic plates and environmental ...

Sand as far as the eye can see – that is the hallmark of Rub' al Khali. Andreas Drouve/dpa-tmn Morning settles over the world's largest sand desert, painting the landscape in golden light. Around the ...

For centuries, the Rub' al-Khali desert near Saudi Arabia and Dubai — known as the Empty Quarter — was dismissed as a lifeless sea of sand. But now, it's revealing an astonishing secret. In 2002, ...