Ground Penetrating Radar is a non-invasive method that is used to map archaeological sites without destroying them. It can be used to find a number of subsurface features prior to, or instead of, excavation.
Non-Destructive Archaeology - Episode 307
Dan Bigman, owner and founder of Bigman Geophysical, tells us about the four primary methods for non-destructive archaeology - that is, looking under the ground without a shovel! Watch for additional episodes about each method after this overview.