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Tucson is surrounded by mountains. These mountainous areas exhibit steep that may contain unstable rock and soils. on potentially unstable soils or rock can be hazardous to life and property. in these areas should utilize construction methods that ensure stabilization and minimize soil . Tucson’s mountains and foothills are valuable scenic resources that should be preserved. Dominant and ridges should be protected in order to preserve the ’s unique visual setting, promote its economic well-being, and encourage tourism. Regulating the intensity of according to the natural characteristics of hillside terrain, such as degree of , significant vegetation and landforms, and soil stability and existing drainage patterns, will allow for in hillside areas while minimizing the physical impacts of such .