In these year, we can examine high-density coordinates data of topographic features by 3d-laser-scaning measurement instruments. For Engineering Geology, this new technique makes services more efficient in many respects. For example, more quickly and more safely dating in a time of disaster, at geological investigation and at land-design, lay off a landslide active blocks, we get a detail topographic features model and slice model, and make of 3d-geological condition.
High-density coordinate measurement method at topographic surface features model is put to practical use, then it is necessary to find a use for Engineering Geology.