Visited on 08/07/09. This is Burl's "the last round barrow", as is the caption of the photo in his "The Stonehenge People". It is Scheduled Monument, number SM10371.
It is pretty much ignored, except, perhaps, by the occasional interested people passing by in a car. It lies just east of Stonehenge, and most people will be seen with their backs to it, staring at the enigmatic sarsens of that great circle.
I wandered over, as cloud shadows chased across the landscape, the sound of the traffic close by. I have never seen anyone approach it, and I had it to myself. There is an impressive ditch with berm, and a patch on the SE side has been eroded away, probably by rabbits. It is quite an impressive barrow.
The ubiquitous Hoare dug here, discovering, beneath an upturned urn, bone tweezers and a cremation, as well as bluestone fragments.
Next time you manage to dodge the obscene admission fee, and sneak into Stonehenge over a distant fence, walk across to our old friend, Amesbury 11, and keep it company for a while, as it's a lonely old soul.