Here is a screen capture from my first test of Photoscan, a software package for photogrammetry that lets you export models and DEMs for use in a GIS. This is some pretty cool stuff. The main drawback of photoscan is that, unlike the other software that I have preferred (hypr3d, photo synth, and 123dcatch), this is not distributed "cloud" computing. As such it tends to hog the processor for hours at a time. I first tried to do a high res model with 190 photos. The first of 3 steps took 12 hours.
This is a top down look of area AA at the Chalcolithic site of Marj Rabba:
This is a top down look of area AA at the Chalcolithic site of Marj Rabba: