Accumulation of rainwater in the Sahara Desert, east of the Aïr Mountains, Niger (© Michael Fay/Aurora Photos)
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- It can seem like a mirage when rainwater pools…""In the world\s hottest desert
- Oases and careful irrigation make human settlements possible...""In the mountains west of this watering hole
- The historically nomadic locals still lead salt-trading caravans through this forbidding landscape.""One young man took the journey for the first time, with cameras following
- This arid, landlocked country has a “coast”…""Where the desert gives way to savannah grasslands
