## 5 Conclusions  
The identification of potential sites for quarrying in a developing country is a key task for the optimal and sustainable use of available resources. This study focuses on the selection of suitable geotechnical sites for the establishment of new quarries in the Ifni inlier and the Lakhssas plateau by combining field data with those acquired by the geotechnical tests in the laboratory in a GIS. The suitable site locations are assessed considering the different geotechnical quality classes it proposes. Geotechnical laboratory tests were conducted on 42 samples of various rock outcrops, including carbonate, magmatic, detritic, and volcano-detritic rocks, to determine their geotechnical quality classes. Each geotechnical class or group was assigned a value between 0 and 4 based on their geotechnical suitability levels. All operations to create thematic maps were performed using ArcGIS software, such as digitization and rasterization. The final geotechnical suitability map was created using the reclassification function. Based on geotechnical laboratory analyses and the geospatial analysis by GIS carried out on various outcrops of the Ifni inlier and the Lakhssas plateau, the following major points can be drawn:  
* Laboratory testing indicated that most of the geotechnical properties determined do not vary significantly from one rock to another. * The classification of rocks according to the European and Moroccan standards has shown that all classes (A to E for the European standard and 1A to 6D for the Moroccan standard) are present in our study area. * Carbonate, detrital and volcano-detrital rocks (excluding the conglomerate's rocks) can be mined to produce high- to medium-quality aggregate thanks to their geotechnical classification (A to E for the European standard and 1A to 6D for the Moroccan standard) and their Los Angeles coefficient (L.A) and micro-Deval coefficient (MDE) values, which are less than 35%. * Magmatic rocks can also be mined to produce high-quality aggregates thanks to their geotechnical classification (A to C for the European standard and 1A to 3C for the Moroccan standard) and their Los Angeles coefficient (L.A) and micro-Deval coefficient (MDE) values, which are less than 20%. * The results of geotechnical analyses allowed us to consider basalts (L.A = 12 and MDE = 9) and rhyolites (L.A = 14 and MDE = 7) as excellent geotechnical materials due to their mechanical characteristics. * The comparison of our results with previous work, carried out in other regions of the world, shows that the rocks in our study area have excellent geomechanical properties because, for the same type of rock, we have a difference in the value of the two mechanical parameters (MDE and LA) which reaches triple. * Based on the spatial analysis, various suitable geotechnical sites in the study area are identified, classified as high (4), medium (3), low (2), very low (1) and others (0), and quantified. * Categories 4 and 3 (high geotechnical quality rocks) are present only in the Ifni inlier, with an area of 339.456 km\({}^{2}\) for category 4 and 264.469 km\({}^{2}\) for category 3. * The spatial analysis showed that geotechnical quality decreases in proportion to the distance from the center of the Ifni inlier towards the four directions (east, west, north and south). * Spatial analysis showed that approximately 71.799% of the area of study area falls into the high, medium, and low categories and 28.201% falls into the very low and other zone categories. According to these conclusions, there are suitable geotechnical sites with a very wide field of use. Nevertheless, for all source sites assessed in this study, we recommend requiring a detailed investigation with a very refined sampling mesh to validate the results. Combining geotechnical results and GIS in this study generally gives satisfactory results for the geotechnical mapping of potentially suitable sites.