Here is a ridge just east of a wetland. Around a larger boulder on the ridge were traces of structures. Not just rock piles but also little groups of rocks in a line running for ten or so feet across the ridge and down into the water. One connects with the large rock along the way. Here is one view with the wetland to the right.See the big rock is in line with a line of rocks that comes up from the left and goes off towards the water to the right of of the rock. A small rock pile is visible in the foreground. Here is a closer view of the big rock:Some other things nearby, included more piles:And more little lines of rocks leading towards the water:It is all very indistinct. Call it what you like, native American or colonial European, this is a little archeological site with no obious interpretation. The only familiar sight is stone lines running over a ridge and down towards water.
If that is going to be the theme, I might as well put this here. A picture, also from those same Groton Woods, of a short stretch of stone wall