## 9 Conclusions  
Based on the literature review, field investigations, and stability analyses, the following conclusions can be drawn:  
1. The use of FEM-based numerical stability analyses incorporating the actual structure of the rock mass--specifically its discontinuities (joints, fractures, and bedding planes)--enabled a reliable representation of the real geological conditions, which are fundamental in determining slope failure mechanisms;
2. The accurate representation of real conditions, particularly the joint system geometry, facilitated the identification of actual failure mechanisms (e.g., Sectors 3, 4, and 6--inter-block displacement driven by the configuration of joint sets; Sectors 5 and 7--the combination of circular slip surfaces in weathered layers with block dislocation in the rock mass):
3. FEM numerical slope stability calculations with explicitly modelled discontinuity networks not only allowed for the identification of realistic failure mechanisms, but also produced accurate values of stability indicators;
4. The landslide hazard levels across the analysed sectors can be summarised as follows:  
* Sector 1--Landslide occurrence is highly unlikely (FS > 1.50);
* Sector 2--Landslide occurrence is highly unlikely (FS > 1.50);
* Sector 3--Landslide occurrence is unlikely, but the safety condition is not satisfied (FS < 1.50);
* Sector 4--Active slope failure processes are occurring, including rockfalls of unstable blocks and deeper structural slides. The safety condition is not satisfied (FS < 1.50);
* Sector 5--Landslide occurrence is probable (sliding, rockfalls of unstable blocks, and creep of weathered cover). The safety condition is not satisfied (FS < 1.50);
* Sector 6--Unstable blocks trigger slope failure processes (shallow block slides and deeper structural slides). The safety condition is not satisfied (FS < 1.50);
* Sector 7--If the slope above the rock wall consists of debris material, landslide occurrence is highly unlikely (FS > 1.50). However, if weathered material is assumed, landslide occurrence becomes probable (creep of weathered cover and shallow block slides), and the safety condition is not satisfied (FS < 1.50)* Sector 8--If the slope consists of debris material, landslide occurrence is highly unlikely (FS > 1.50). If weathered material is assumed, landslide occurrence also remains highly unlikely (FS > 1.50). * Slip surface locations varied across the sectors: in four sectors, the slip surface was confined to weathered layers (Sectors 1, 2, 3, and 8). In two cases, the slip surface extended through the rock wall and weathered layers (Sectors 5 and 7). In two sectors, the slip surface was located entirely within the rock mass (Sectors 4 and 6):
* Local rockfalls and shallow slides cannot be excluded, even in sectors classified as stable. Ongoing weathering processes and adverse atmospheric conditions, such as heavy and prolonged rainfall or freeze-thaw cycles, may trigger these phenomena:
* In sectors where the factor of safety is below 1.50, remedial measures must be undertaken to improve the slope stability conditions:
* To ensure the safe public use of the site, hazard and protective buffer zones must be established to separate visitors from dangerous areas. Furthermore, additional stabilisation measures, including rockfall protection meshes and anchoring systems, are recommended to allow full access to the quarry walls:
* The calculations indicate unstable conditions for Sectors 4 and 6. Failure to implement protective measures may lead to progressive failure processes and significant damage within the upper and middle parts of the slopes. It should be emphasised that detailed field investigations and laboratory testing are necessary to verify the lithology and strength parameters of the weathered layers, debris material, and limestones used in the calculations. Moreover, the minimal number of boreholes--including only two penetrating the weathered layers--necessitated assumptions regarding the thickness and boundary between the rock mass and the weathered materials.