I spoke to an old chap on the phone today to arrange to go and photograph the superb round barrow in his garden. In case he isn't around I figured I'd pump him for info now, and he says that his father owned the house, and to the north of the barrow, not far, maybe 10m, are two standing sarsens, one of which was put up to match the other, supposedly original, stone. They are not that big, he says, and they are not mentioned on any of the [scant] records on the site. The barrow also stands directly above a spring, which accounts for the disappearance of the downslope ditch, which I've never seen before, though the one may have resulted in the other.

Are there many round barrows with connected sarsens, or is this likely to be a hoax?

Could a ditch cut into a downslope result in a spring where there wasn't one before?