photogrammetry uses the images to remotely survey the earth's surface. the digital processing of the photos creates a three dimensional image of the search area. when you make the three map it allows the investigator team to get an overhead view in a plane parallel to the slope of the surface here at very very high resolution when you get that three d. map you can orient that map or however you like. the researchers can digitally scanned the sides of the former camp for any irregularities. they will need to do that because the physical search has not paid off. on the last day of the excursion to scientists inspect the area around a school that had been used as a base by the paramilitary. i don't think.