Thank-you all very much for the replies.

I can remember going to Woodhenge many years ago but had no idea about Durrington Walls then.

Chance, those maps are really helpful, now I can get the whole area into perspective. I can't believe how many Barrows and Ditches are in that area.
As you say, parking in the Stonehenge car park is a good starting point for walking to many of these sites.

Thanks Pete, I will look out for the signpost regarding Durrington Walls while at Woodhenge.