We obtained calibration models for 32 soil properties based on Vis-NIR (350 - 1700 nm) underground soil diffuse reflectance spectra collected using a real-time soil sensor (SAS3000) with a DGPS system, in order to generate soil property maps. We have previously demonstrated one-layer soil maps for soil management decision making by growers; however, for effective crop management, growers often wish to obtain complex layer information for their fields. Thus, in the present study, we measured two-layer soil depth on the same field, using tram lines and the SAS3000 sensor. The two layers selected by the grower were 0.15 m and 0.30 m. Guidance on soil management methods was also requested by the grower, and this will be a future task.