Thanks Jane. I've just read a bit more of the thesis rather than just the synopsis, and I must admit he does cover the trilithons being a horseshoe shape. It still sounds pretty far fetched to me though.

beatles - a couple of notes for your thesis:

1. It is a "mortise and tenon" joint, not "mortise and tendon".
2. Stonehenge has an "Altar Stone" not an "Alter Stone".