Reader Cully writes:
My friend Linda and I came across 4 or 5 of them in Partridge Run Game Preserve in New York. South of Rennslearville. West of Berne. Approximate location is 42° 33.754'N 74° 08.258'W. They are on a well marked trail. We are very curious as to who built them and why? Left over rock from clearing a field? I have also found 2 of them in Thatcher State Park. They are in the middle of the woods. The area was once farm land in the 1800's and since has overgrown as the farmers got tired of dealing with the rocky soil and moved elsewhere.
[He continues in another email...] Images 58 - 61 are of the first pile found. It measures 9'L x 3'W x 4'H.