(Click for larger)
In the last post http://www.sarsen.org/2013/02/all-feature-plan-of-stonehenge.html I featured a plan of Stonehenge which was criticised in the comments for being inaccurate. For comparison here is another plan of Stonehenge where the position of the South Barrow and Ditch can be compared. This plan is I believe more accurate.
I have used the plan to show how the cremation burials we know about (and there are probably many we don't know about) cluster around the alignment for the mid-winter solstice sunrise.