A guerba filled with water hangs from a tree for condensation. This cools the water - Aïr - Niger - 2000

The goatskin guerbas are filled with water. In the valley of the gueltas (waterholes), in the northern part of the Tamgak massif, also known as Zakkat - Aïr - Niger - 2002

The Guelta Bilal in the valley of the Gueltas (water holes), in the northern part of the Tamgak massif, also called Zakkat - Aïr - Niger - 2002

The guerbas are filled with water at a guelta in the gorge between the two Tamgak mountains - Aïr - Niger - 2000

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