The landslide susceptibility for the Three Gorges area is shown in Fig. 13. We evaluated the usefulness of the mapped landslide susceptibility for the Three Gorges study area in the same way as we did for the Kaixian area. In the Three Gorges study area, there were 205 observed landslides (Fig. 14; note the high concentration of landslides that occurred along the Yangtze River). The computed z is 10.75 and the corresponding p-value is far less than 0.001. Thus, we conclude that the computed landslide susceptibility values are good indictors of landslide occurrences. This further suggests that expert knowledge can be extrapolated to another study area and the developed approach can be used in large-scale projects.