First I just want to thank pwax from the Rock Piles blog for taking the time to come over here. He has way more experience than I do in studying this subject. I really appreciate your comments and observations pwax. Thanks.

Back to the long pile. This is the other end of it looking down the hill. The single rock at the front looks kind of round here but in real life it's more of a triangular shape and looks almost like a marker stone.
I'm noticing the camera doesn't capture the true perspective of things. Form the pictures the area looks to be quite flat but it's actually fairly steep. The rock with the "twins" is about 10 or 15 feet higher in elevation than the main portion of the long pile.

Our elevation here at the bottom of the valley btw is 2070 ft abs. The highest point on top of the ridge at the end of the hollow is about 2500ft. The hollow gets very narrow further up and the sides extremely steep. There are some impressive natural rocky outcrops up above. That's one reason my first thought was that over the centuries the rocks have tumbled down the mountain and come to rest here. I'm sure that's the case with many of them, but once down they don't jump up and arrange themselves like this.