Another day another rock pile site

I am weary of reporting sites. Comments are so rare it is not clear that anyone even reads the reports and there is no indication that the particulars of a place are of interest to readers. So I am going to report highlights and pass along the best photos I can. As much as anything, I guess this is for me to come back later and remember. I hope to spend my final years revisiting these places in my mind and remembering the smell of the hay scented ferns. So here is another. 
I have been to Wolf Swamp in Boxborough and the hill south of Holiday Inn many times. I thought of a new angle I could take and set out. Beyond where Konstantin Bykhovsky died and on to the southern entrance. Going in from there I angled as far left (west) as I could, staying behind the houses. I tried to follow the water's edge and on the way back I tracked a bit further up hill. Finally amidst the endless, featureless, expanse of saplings, I found a few old piles - barely worth mentioning. I actually found two clusters of rock piles. When I got home to put dots on my Hudson Quadrangle map, it was gratifying to see one of the dots was already there. So I added a new one.

In that valley between the two dots was some interesting stone wall features. Almost impossible to photo in the dappled light:

It is a rectangular extra, next to the wall as it comes up to a boulder and takes a break.

Rocks, visible above ground, led off in an alignment from this place.
Then, this sort of low pile (I think this is a marker pile site):

A number of piles like this, suggesting something sort of circular with one larger rock:

Here is another:

And another:

One more: