1. A method of detecting a possible presence in an area of study of a ground-level object, the method comprising: gathering a point cloud of three-dimensional imaging data representing the area of study from an aerial position where an intervening obstacle impedes a line of sight between the aerial position and a ground-level object; processing the imaging data to identify elements in the point cloud having substantially common attributes signifying that the identified elements correspond to a feature in the area of study that is at least partially obscured by the intervening obstacle; generating at least one isosurface associating the elements having substantially common attributes; selecting a region of interest from the area of study; generating from the imaging data gathered from the aerial position an up from underground oriented visualization model of the region of interest; and displaying the up from underground oriented visualization model exposing the feature in the area of study that is at least partially obscured by the intervening obstacle in the line of sight between the aerial position and the ground-level object.