Bordeland State Park - 1st visit

I stepped into this woods from the southeast (there is a little parking area) and saw stuff immediately - although the topography is flat and not very promising. You walk in along a dirt road. On the right...
...a little curve of stones,

a split-wedged rock:

On the left, as soon as you come to a low place with water draining (southward) there are big messy piles that are adjacent to large pits that appear to be from sand/gravel quarrying for the road. The big piles look like discards:

But they are adjacent to smaller ones that really look closer to being ceremonial. Eventually, I convince myself that at least some of it might be ceremonial:

Is that internal structure in the larger piles?

Finally, I have no further doubts:

 

This cluster is within 60 yards of the entrance, on the left. 

Looks like structure to me:

More long messy berms:

More isolated piles, grouped within view of a nice small boulder:

Ceremonial with a backdrop of suburbia:

I am sure I just scratched the surface in this park. I never got to the higher land further west I had been planning on getting to. Saw too much stuff before that.

Yeah....that's structure:

[Blogging from Berkeley CA. I did not see the walls yesterday, although we went looking.]