Public Comments of the Video below. The below ground structure shown in your video is a 19th century housefoundation. The short narrow extension from the foundation would have helda stair case to access the cellar, most likely from an outside bulkhead.The foundation is an excellent state of preservation suggesting the houseprobable survived into the late 1800's or early 20th century before beingdestroyed. The house could have been a small homestead, summer cottage, oreven a well built hunting camp.As for the other photos, these are without question Native Americancairns. It is a typical mix of cairns styles seen all along the Atlanticcoast - split boulder cairn, on ground cairns, cairn attached to aboulder, etc.We have seen a number of sites with multiple land use. Meaning an oldercairn site was re-used by a white farmer during the historic period. Inmany of these cases, the farmer tended to leave the cairns untouched forwhatever reason. We have seen a few cases, in which the cairn site wascontemporary with the farm - a case where the farm was owned by NativeAmerican family which had adopted European culture but secretly maintainedtheir old religious traditions, generally on a remote (out-of-sight)section of the farm. - This mixed cultural/time periods usage of the sameland tends to cause all sorts of confusion to researchers. This confusionis at the heart of disagreements over Oakland site.As for the noise on the video clip, I suspect it maybe from the camera. Idefinitely can hear at the beginning of the clip some "noise" from thecamera, and I suspect the high pitched noise near the end is related. Thebest way to find out is film some more 30 sec to 60 sec clips and see if you get a repeat of the noise. James Gage http://www.stonestructures.org/