Abstract: There are many geophysical survey methods using non-destructive rating techniques that can be used to explore underground cavities and ground relaxation zones. However, some geophysical survey methods have factors that affect the characteristics of underground media and the actual soil in the ground contains complex elements that affect geophysical survey. Thus, it is necessary to analyze the effects on geophysical survey methods based on the understanding of soil engineering properties. This study aimed to construct a test bed to identify the accurate location of underground facilities and to conduct an exploration of underground burials using Ground Penetrating Radar (GPR). The study results exhibited that soil stratigraphic classification could be possible and reflected waves were measured at the boundary where the dielectric permittivity was different between an underground burial and the soil. The results of comparison of the actual underground facility location and calculated location from the GPR exploration results showed that similar measurement results could be obtained.