Architetture difensive nelle valli dello Ziz e del Todhra in Marocco

[EN] The earthen architecture of the Todhra and Ziz Valleys in Southern Morocco takes us back to the basic and archetypal forms of building in the Mediterranean. Architectural typology and language together form a cultural background that is strongly rooted in the territory and its inhabitants: the Berbers. The architectures, fragile and in constant decay, represent a treatise of living architecture in which the shapes, proportions and decorations are repeated over time with continuity. This research tries to verify, with data coming from direct and instrumental surveys, the quality and diffusion of the architectures that dot the valleys of the Todhra and the Ziz which, at same time, host the population and defend the most precious asset: water. Along the valleys, united by the same language, we find: igherm, fortified citadels; tighremt, fortress houses.