Ken,

If Jan doesn't have a clear answer a mere mortal as I will certainly have very little information (if any) to add. My experience with historic timber structures is from the PA, MD, and NJ area, the earliest still later than what Jan is working with here.

Interesting images though. I'm not sure how one would better or best describe an archeological mystery. Jan put up a lengthy post and it seems that folks still needed some images.

Maybe some of the other posters here will have a clue. But perhaps you shouldn't hide the contents in this thread. Get another one going with clear title and subject so one might find it?