THE ALGERIAN FOGGARA PART 2: THE WEALTH OF KNOW-HOW.

This article reveals some secrets hidden behind this ancestral hydro-agricultural development which has been operating for more than 30 centuries. During the period 1992-2024, several missions were carried out in the foggaras oases. Investigations and surveys were carried out among the owners of the foggaras and the Ksourian population. The results obtained show that the know-how acquired on foggaras is immense. For the first time, new notions about foggaras have been introduced into the technical bibliography. This is how in Algeria, there are two types of foggaras: volumetric and hourly. Part 2 of this article highlighted the diversity of the foggara. Eight (8) models of foggaras have been highlighted in the Algerian Sahara. These are the Tademaït foggara, the Erg foggara, the garden foggara, the wadi foggara, the Ouakda foggara, the Kenadsa foggara, the Ain foggara and the Mzab foggara. An acquisition of significant know-how has given rise to a diversity of foggaras, thus justifying the originality of the Algerian foggara. A proof which demonstrates the greatness of the Know-how and the oasis genius. So, should we let a heritage of this magnitude die out in the short term? [ABSTRACT FROM AUTHOR]