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Ground Penetrating Radar (GPR) is used to acquire data from near-surface depth for archeological, infrastructural, etc. researches and applications. Acquired GPR data allow users to visualize and interpret the underground structures with high accuracy. Usage of the suitable approach for 3D visualization will increase the accuracy of visualization and interpretation of underground structures. In order to contribute to this problem, following approach is proposed. Firstly, the incomplete or missing data are recovered using interpolation techniques. Secondly, the GPR data corresponding to the underground structures or anomalies are extracted and placed in a 3D cube. Finally, the extracted GPR data are visualized in 3D environment. By inspecting the 3D model of underground structures from different angles users can interpret anomalies with high accuracy. The proposed approach was implemented on the real GPR …