The versatility of ground penetrating radar (GPR) to solving different subsurface detection problems in urban settings is demonstrated. In particular, the advantage of the 3D approach to GPR surveying and how it complements the traditional 2D radargram outputs is demonstrated. These case studies include the mapping of man-made structures such as drain pipes and other utilities as well as natural, but non-geological targets in the form of tree roots. The non-destructive and non-invasive nature of GPR is also evident in the two case studies presented here.
