The first question about the safety of the dam, your favors were about what was in the foundations of the sirouge dam by making a plastic wall in the area of u200bu200bcaves and fragile areas at a high cost, and this is a solution for such foundations. Al-Sarouji was dealing with the dam on the fixed ground, and after the proposals of the expert committee and the committee of geotecking experts in Ethiopia, the stiff working in the dam was changed and level one was designed according to the existing geological works and laboratory works. Geotechnical recommendations are supposed to do their work