Holliston site with Norman Muller and Bruce McAleer

Norman writes:

You attended that field trip to Holliston that Bruce McAleer led in November or December 2005 .  A fascinating site, and one of the features that intrigued me was a fairly large erratic with three smaller stones aligned in a horizontal row in front of it  (0055 below) .  I was certainly struck by this, which is the reason for the photo.  Another view shows the same boulder with two other erratic in front of it (0056).  To me, the alignment of the three smaller rocks in front of the first boulder is significant, and I wonder if these three smaller rocks in alignment simply signifies the three larger boulders in a row.  I also wonder if the vulva shape on the boulder means anything, or if I'm reading too much into it.  The Native Americans were certainly aware of shadows and how they can change how one interprets certain features.

What do you think?

[PWAX writes:] I think that the three smaller cobbles are what is left of a little outline next to the bounder, that was used in connection with the larger boulder alignment. So....what is left of a prayer seat? The arrangement of smaller cobbles is suggestive but I think it may be that one of them was simply knocked out of line.