Barnes Hill and Wrack Meadow - Berlin/Boylston

I thought it would be fun to explore the western slope of Barnes Hill, down to the water. So I walked in from the north until I started tiring, then went back out. This is a big undisturbed woods and I came across something interesting every few minutes. The lighting was bad so most of the photos were blurry. Here are some of the things I came across:

First of all, I don't know what this bush is called but it is a lifesaver:

Whenever I start getting bothered by bugs, if I am lucky I find some of this bush and I wipe my face with the leaves - they have a lovely soapy smell that is a good insect repellent. I call it "soap bush". Anyone know it?

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Next, a number of rock-on-rock, propped rocks, wedged rocks:

 

 

Some quarry remnants:

At one point I saw a rock-on-rock and walked up to it, only to see another slightly further uphill. When I walked to the second, I saw a third uphill. Then I got into a small cluster of rock piles:

 

 

I kept seeing this shape:

 

What about this:

 other side:

Finally a more substantial pile:

 other side:

Right next to this pile was a boulder with the kind of "drill holes" you get using a flat chisel:

 

I have no reason to suppose two types of people here, one making rock piles and another using primitive rock splitting techniques. So I want to consider this rock to be an associated "artifact" that is date-able to the early colonial period.

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The most interesting thing I saw was down right next to the water:

I am not used to such small rocks and their placement is pretty deliberate. Doesn't look like this has been moved since when it was made. I am sorry I did not get the relation to water, which this "looks out over" from the edge.
And also this rock-on-rock way up in the air:

 I have only seen such a thing once before. I do not remember where.