The stones look weathered, but do they look like they were ever actually squared up and finished?
Not sure I understand the question you are asking. My first impression when I saw them was that they didn't look as big as I had thought they were. Of course there is a rope barrier which prevents anyone from gaining a closer look at them.
All is not as it appears. The columns were rebuilt in the first half of the 20th Century, the stones repositioned, and set in concrete foundations.
http://www.ufos-aliens.co.uk/cosmicstonehenge.htm