Reader Nicholas P. writes (about the Westminster area):

The walls I have followed all over the area, and they are some of the most erratic and dramatic I have come across, save for some of the walls in the Nashoba lands. I’ll start with a few, and if you want more, then by all means. 

The first few I’m sending are of two large boulders, both serpentine-head like, that face each other and act as an ‘entry onto the hilltop’, with the typical snaking bodies of wall coming off of them. Walls run out of the swamp far below and seem to stop in relation to them. 

Also a few of the more notable aspects of some walls.