Rockfalls are common in mountain areas and represent a serious threat due to their high propagation velocity that, independently from the volume involved, can be extremely dangerous to buildings, roads and people. Therefore, it is necessary to preliminarily identify those areas most prone to this type of process, in order to pursue a territorial planning with consciousness of hazards and risks. Rockfall hazard analysis over wide territories is anyway rather difficult, because many variables, which are difficult to identify at that scale, have to be taken into account (i.e., fracturing of rock masses, presence of water etc.). Hence there is a need for identifying methodologies capable of reproducing complex processes that are involved in rockfall occurrence and propagation and to preliminarily identifying the areas most susceptible to this type of hazard. (Piacentini & Soldati 2008).