Plaxis 3d is being used for numerical analysis of complex geotechnical problems in various large-scale structures, including ancient tombs and tunnels. The software has been applied to analyze the stability of sites such as Tutankhamen's Tomb and the Serapeum tunnels, as well as to assess the structural stability of other large constructions. The use of Plaxis 3d is also being explored in other contexts, including mining and soil improvement projects.