Gill Swanton & Colin Shnell created a 3D model of Adams Grave using tomography and some clever software.
I'm sure the same techniques could be used elsewhere with fibre optic cameras.
Then of course there was the hugely expensive 3D model of Silbury that Skanka buggered up which is now next to useless.
Maybe a few years down the line the technology will improve enough to be really usefull.
PeteG