The research within the GeoSAVAGE project will focus on studying the geological evolution of the Western part of the Sava Basin based on surface and subsurface data. Despite continuous exploration of the area, numerous unanswered questions persist, such as the spatiotemporal distribution of geodynamic processes, sedimentation dynamics, and interactions with tectonic processes. Through the application and synthesis of modern geochronological, thermochronological, geophysical, biostratigraphic methods, as well as structural and sedimentological analysis of surface and subsurface data and the analysis of active tectonics, this research aims to provide a more precise determination of the timing and mechanism of the Basin opening, dynamics, and timing of sedimentation of syn- and post-rift deposits, along with Plio-Quaternary sediments. Moreover, by applying the abovementioned methods, the project will seek to elucidate better the dynamics of geological processes that have shaped the current structural framework, active faults, and geomorphology of the Western part of the Sava Basin. The project's results will also have practical applications in green energy transition and sustainable underground management or assessing geological hazards related to seismically active faults.