Liberty Square - Boxboro

I explored back here when my kids played soccer on the playing fields. Went again, remembering I had not been as far north as possible. I expected to see wall bulges - carefully enclosed rock piles included in a stone wall - and thought here was a new one (below the word "LIBERTY"):

 (See the lighter rocks at the corner?)

A rather nice structure.

Nearby was a more legitimate mound, if badly obscured by debris:

This and a few of the other "usual suspects", convince me that wall bulges are not just for keeping fields tidy. 

wall bulges are a common feature in the woods behind Liberty Square and I recall another from the woods down one exit on Rt 2, at Newtown Rd. I have posted a few in this blog.

So then we go down the way bit (south) and can see another large mound across the valley:

We have been discussing this in comments (here), so let's have a look:

The first picture in this group shows some structure down in the water. It is quite composite and, seen from the last picture, another example of a wall bulge - telling us almost nothing. 

A bit further south, I was up against a road or driveway and some houses and rounded a ridge to get to where water began draining to the south. Noticed a small pit shelter dug into the sand:

Seen from above, looking past another small pit.

At the very highest point (of water flowing south, next to a road) there was a small site. Visible from that pit structure.

A bit of a small hollow in that one.

Then I was tiring, and tried to head out. There were odds and ends of pretty things throughout. Boxboro never disappoints: