|John S and Ryan C and the ground penetrating radar set up|
Ryan and John then went exploring about the site and found another slight depression 60 meters or so to the southwest of our excavation. We determined that it is cultural when a soil probe turned up charcoal. Now to see what the GPR could see. And it did pretty well. It looks like another late prehistoric house depression! Next year we hope to excavate this feature and see exactly how well the GPR did at outlining the depression.
I was pretty happy with how well the GPR mapped out the late prehistoric houses. But a little disappointed with its abilities to find older features (and it turns out it missed one in the southeast corner of our excavation). I still think that good old fashioned test pits and soil probes are the best way to find archaeological sites, and the limits of sites. But the GPR does 'see' rock piles and house depressions pretty well and I can see using one in the future to help position excavation blocks.
I am very happy with Ryan, TerraSond, and Northwest Geophysics for giving us the opportunity to use ground penetrating radar. Thank YOU!
|A figure from Ryan's report that shows how the GPR did with the unexcavated sideroom|
|GRP results of the new house depression that John and Ryan found (seen in top photo)|