On the way to the top of the Mulpus

As mentioned recently, I made it to the top of the Mulpus. I went in from the west, parking on New Townsend Rd and cutting into the woods. I hit a trail along the side of the hill, followed it south to where I could see the back of a house, then uphill to about where I marked on the map:

Here there was a faint gully with a rock pile greedily taking up the whole space. Some views:

 A few auxiliary smaller piles confirm this is some kind of site.

 This is right next to the trail:

When I got home I tried to mark the spot on my "official" topo maps but it seemed there was already a spot there. But I don't believe it, this was a new place for me.