Abstract : This study is in line with the analysis of natural and social mechanisms that determin the present situation in the Ferlo Low Valley. Some describe that situation as a tragedy on a natural scauge and others describe it as a serious ecological crisis.The changes have been observed in the rural landscape of Low Ferlo because of the extent of damage on farm lands that is, on the one side the consequence of a very frequent use of the lands after the arrival of mourid colonists and new farmers attracted by the drop of the price of water in a part of Low Ferlo. On the other side, it is the consequence of the excessive concentration of cattles in a more and more reduced space around the drillings and some ponds, being thus at the origin of concentric circles of damage and serious conflicts between the different users all around. Here we notice that the ambiguity that characterize the rules concerning land management, is undoubtedly the real cause of conflits in Ferlo Low Valley. Besides, the difficulties to find water due to the shortage of corridors of passage and the variability of courses makes essential a much more frequent pastoral mobility, in order to minimize risks.But, despite the alarmist discourse on Ferlo, the analysis of the landscape reveals agricultural belts that almost identically recur, in terms of area since 1954. The Ferlo Low Valley remains a particularly pastoral area. And the alarming feature of the landscapes is just a kind of adaptation of the society to a vulnerable space.