A view of Petra from the steps of the amphitheater Christina Rizk Left: The Treasury building, also known as Al Khazneh. Right: A donkey stands in the gorge known as the Siq, the main entrance to ...

At the end of the Siq ... satellite imaging and drone surveys revealed a massive structure-about the size of two Olympic swimming pools placed side by side-submerged in sand half a mile south of ...