“…Natural or built slopes are defined as sloping surfaces on rock masses, earthy or mixed masses, originated from geological, geomorphological processes and anthropic actions. The slope design involves the collection of geological and geotechnical information, the evaluation of the strength properties of the formations and discontinuities, and of the presence of water with emphasis on the pluviometry regime (e.g., [2,9,17,33,54,70,74,76,81,92,96].…”