Land collapse is a challenge that faces development plans in many locations allover the world. In Egypt, it threatens facility lines as roads and urban settlements. Detailed field investigations are an effective method for conducting studies for this phenomenon but uneconomical for large areas.

Remotely sensed data have facilitated geohazard exploration and monitoring as well as modeling risk and vulnerability of land collapse as one of he most important geohazard factors. This study models the potential land collapse hot spots all over the Egyptian territory. The model depends on using five parameters derived from different remotely sensed data of different sensors both optical and radar as well as using Geographic Information System (GIS) software. The output of the model is a land collapse risk index map. The model results are overlaid on the main roads and urban settlements. The resultant map identifies those urban features that are vulnerable to land collapse, and it is useful for land use planning decisions on the existing built environment and proposed development plans. The map as a hot spot indicator can be used to prioritize zones in need for further detailed investigations, and then for mitigation measures and contingency plans.