Three in a row with a turtle

My guide took me to small rock pile next to a big cedar tree. The pile was isolated, out of context. But then we saw another pile across the hill a bit, so I realized the first was not completely isolated.(You can see the first pile in the background beyond the fallen tree.)

Then we came to what my guide called a "big rock on little rock". Followers of the turtle will make note of this.But then looking back towards the previous piles I realized that all the structures were exactly in line with each other. You can make out all three in this picture.
So imagine a framework in which a turtle would have some function within an alignment of three objects like this.