...on the way home I decided to take Sugar Rd north and turned onto Golden Run Road only to spot several rock piles next to the road at A.
Here is one I saw from the road.
Across the street at B there were some interesting short stretches of wall - one of which was part of a pentagonal enclosure of low walls. Another was part of what looked like terracing, and there was at least a third short fragment in there. Here is part of the pentagon, looking back towards the road to the right.I made a video of this here.
A little higher on the same road, I saw another rock pile out the car window to the right. When I walked down at C to explore, I found a small marker pile site.A few details:Pretty nice piles for a winter's day.