Zegarra Cayo, Yanara Gutiérrez Santolalla, Francisco 2023 2023 The study area is located on the proximity of the village of Villafranca del Ebro, 20 km downstream of the city of Zaragoza. It comprises a section of the gypsum escarpment at the northern margin of the Ebro Valley. The main objective of the present work is to map and characterize the active Villafranca de Ebro landslide based on the observed geological and geomorphological features. To achieve this general objectives, it was necessary to identify the different landslide masses, determine the rupture mechanism, establish their relative chronology, infer the factors controlling the evolution of the landslides and evaluate the degree of activity. Using orthoimages and a Digital Elevation Model (DEM) a preliminary detailed mapping was produced. LIDAR data from 2010 and 2016 were utilized to produce higher resolution DEMs of different dates were generated. Using 274 zenithal drone photographs with longitudinal and transverse overlaps of 75%, a high-resolution DEM and orthomosaic were generated by photogrammetry. Detailed digital mapping on the drone-derived high-resolution data was carried out in which three main zones were recognized. The results obtained indicate that for zone 1 the volume of landslide is 486.846 m3, for zone 2 it is 2.395175 m3 and for zone 3 the volume is 4.273.375 m3, the sum of which gives a total volume of 7.155.596 m3. The development of rotational landslides is determined by three conditioning factors: (1) the lithostratigraphy, with the presence of clay sediments at the base of the escarpment which favors the development of listric failure planes; (2) the structure, characterized by a set of NW-SE-oriented joins which play a fundamental role in the development of the landslides and the evolution of the escarpment; and the topography. Among the triggering factors, precipitation is the most important because it can increase the moisture content of the clay level and favor lateral expansion. In addition, gypsum dissolution it is responsible for the widening of fissures, the development of collapses, and the loss of mechanical strength of the rock mass. Finally, fluvial erosion, which was relevant at the beginning of the evolutionary cycle, reduced the basal support by undermining inducing slope instability. Although slope movements do not pose a great risk, they can generate considerable economic losses. Therefore, detailed cartographic inventories help to identify unstable areas as an essential basis for risk mitigation by preventive planning.<br /><br />