A woman walks along the sand dunes as the sun sets over rocks in the White Desert north of the Farafra...
A woman walks along the sand dunes as the sun sets over rocks in the White Desert north of the Farafra Oasis, southwest of Cairo, Egypt May 15, 2015. The White Desert, about 500 km southwest of the Egyptian capital Cairo, features limestone and chalk forms strangely shaped by the wind and sand, a terrain that gains in intensity when illuminated by the moon. Slightly to the north lies the Black Desert, given its name by the volcanic rock dolerite, similar to basalt. Four-by-four and trekking trips for tourists include Bedouin music around campfires and nights slept under a breathtaking array of stars. Picture taken May 15, 2015. REUTERS/Amr Abdallah Dalsh