The Dudince Spa, which is located on the southwestern fringe of the Central Slovak Neogene volcanic field, is renowned for its thermomineral waters, enriched in CO₂ and H₂S. Historically, mineral water springs had been located on several travertine mounds; however, these are now inactive due to the extraction of mineral water through wells. This research focuses on the travertine formations within the spa, and considers them essential for understanding the Quaternary tectono-hydrogeological evolution, notably through the analysis of reorientations in the paleostress field. Leveraging high-resolution LiDAR (Light Detection and Ranging)-derived digital terrain models (DTMs) and geomorphometric analyses, this study evaluates the potential to identify travertine deposits (geobodies) partially concealed by vegetation, while clarifying their spatial distribution and genesis. These travertine mounds are located along the northwestern and northeastern rims of the NW‒SE-oriented Gestenec Elevation, which is directly linked to the horst found in the pre-Cenozoic basement. The structure forms a barrier to the inflow of mineral water from the northeast. The tectonic evolution of this elevated structure is connected to a shift in the orientation of the stress field from a NW–SE to NE–SW (ENE–WSW) direction up towards a ESE‒WNW (SSE‒NNW) direction, which had been generated by dextral movement along the Central Slovak Fault System during the period between the Middle Pleistocene and the Holocene. Faults oriented in the NW‒SE to NE‒SW directions facilitate the upward flow of both mineral water and the juvenile carbon dioxide that saturates it. The applied methodology (geospatial analysis and field geological research) illuminates the dynamics of stress field rotation, influencing the tectonic and hydrogeological properties of the study area. The results highlight the efficacy of LiDAR mapping and geomorphometry in geological exploration beneath a dense vegetation cover, thus providing a model for similar studies in geothermal fields and tectonically-active regions worldwide.