A027 Localization of a karst conduit using Magnetic Resonance Soundings a case study Abstract 1 Initially developed for one-dimensional applications Magnetic Resonance Soundings (MRS) technique can be also applied to investigation of two or three dimensional water-filled structures like karst conduits and caves. Numerical modeling reveals that MRS is able to detect water-filled karst. Based on these results field experiments were carried out. The aim of presented experimental study was to validate MRS 2D mathematical model and to develop a methodology of acquisition and interpretation of MRS profile over a karst conduit. It was found that results of 2D inversion