Introduction: Environmental change issue, as one of the environmental problems, has attracted scientist’ attention. Geomorphology is one of the sciences that trace the environmental changes based on geomorphological evidences. Evidences represent that, in earth history, climatic setting of every region has often changed and therefore geographical and geomorphological conditions have altered. Since the formation of civilization focuses especially cities depend on morphologic setting of regions, great flat plains with low and smooth surfaces are favorable places for habitation but plains in mountainous regions, as Aspas plain, don’t provide appropriate situation because of the lack of favorable geographical parameters.