## 6 Discussion  
The interdisciplinary research carried out in the area of the Laguna del Amor landslide has allowed for a comprehensive understanding of the geological, geomorphological, and hydrological factors involved in its stability. Using photogrammetry, the slopes, discontinuities, and the presence of scarps in the area were characterized. Likewise, the geological analysis allowed the determination of the composition of the soil, while the Electrical Resistivity Tomography (ERT) facilitated the identification of the underground flow of water, saturated strata, and the morphology of the landslide. This study is one of the first of its kind in this region, in the face of a scarcity of data, professionals, equipment, software and hardware, in an area of tourist interest for the development of the city of Chota [63], making research into the resistive properties of the stratigraphy of the area essential. The vertical electrical tomography method in the pole-dipole arrangement proved to be effective for evaluating landslides [18], identifying, in this case, a landslide with a SE-NW direction, with a stratum of very low resistivity, in which there is a variable depth fault plane associated with saturated materials, predominantly belonging to the Colluvial-Deluvial slope subunit [23]. The geological composition includes shale and weathered limestone, which are known to increase the risk of landslides [45; 46; 47; 48; 49; 50]. The soils on the slopes of the Laguna del Amor area are classified as CH, concluding that the lithology and the presence of springs and marshy areas cause the instability [24]; likewise, the geophysical studies correlate with the strata with higher humidity and/or saturation such that the resistivities vary from 0.6 to 8.8 Ohm\(\cdot\)m. In turn, it is concluded that a fundamental parameter for evaluating the prediction of landslides is the displacement of slopes due to the ease of data collection; likewise, the structural degradation of a slope has an influence on the freezing and thawing of the land [13; 14; 15; 16]. The low resistivity of the materials indicates the existence of saturated or clayey materials, and the geology and geomorphology of the area indicate the existence of clayey formations and highly weathered sedimentary rocks (shale and limestone), while the climate (Figure 6) of the area suggests high saturation of the strata. Therefore, the existence of these two factors is what causes the landslide and the imminent risk in the sector. These are the main conditions for the activation of the landslide at present [4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64]. The electrical resistivity profiles revealed three distinct layers. The first layer, of low resistivity with a resistivity between 0.6 and 8.9 Ohm\(\cdot\)m, is composed of calcareous rocks with intercalated shales and saturated soil. The second layer has resistivity values between 8.8 and 92.6 Ohm\(\cdot\)m and corresponds to calcareous sedimentary rocks with intercalated shales and slight humidity. Finally, the third layer, with resistivities between 92.7 and 669 Ohm\(\cdot\)m, is composed of calcareous materials with intercalated shales with lower moisture content. In the Lagunas sector, the existing materials are predominantly sedimentary. Throughout their stratigraphy, these strata are very common in landslides. Their behavior can be summarized as absorbing water and gradually losing their stability due to the swelling of the shales, tending to soften and disintegrate, weakening the structure of the stratum, and causing a landslide. This would explain why the fault plane occurs in the area of greatest saturation. This is the case of the landslide in the lagoon sector due to the fact that it has been activated since the intercalations of materials present complex behaviors in the face of water saturation.