Do you have any hard evidence for this at all? I'm not a stonehenge expert by any means, but if memory serves the trilithons are in a horseshoe shape, not a full circle, which doesn't fit your theory of a carousel.
sir, please go to the site http://www.granaryatstonehenge.org and read the part of the thesis about the purpose of the trilithons in the granry. thanks for your question. clyde