The ancient kasbahs are made of little more than mud and straw. When maintained, they can last for a millenia. When abandoned, the rains and winds take their inevitable toll, slowly reducing them back to dust.
While at Aït Benhaddou, I came across a skilled craftsman patching the walls and he let me take a few photos of him working. . . .
And of just his hands, the mud, and a trowel.
Hands of man working on mud walls in Ancient ksar (old city) of Aït Benhaddou, Morocco. Canon 1Dx. 93mm. IS) 1000. 1/125 sec. at f/6.3.