I was inspired to visit Brightwell Barrow after reading a reference to it on the Poem Tree on nearby Castle Hill
"In misty distance see the barrow heave
There lies forgotten lonely Cwichelm's grave."
It looks like one of the "hedgehogs" surrounding avebury although there are few trees. There are several rocks which look as if someone has brought them up there attempting to build a cairn?
The place is certainly very lonely and exposed and is worth a visit. Perhaps it is best viewed from the Clumps, while reading Joseph Tubbs' poem on the tree. Project Timescape is where you can sget a nice cup of tea and see the artefacts on display that Time Team found in the area.
EDIT: According to the Northmoor Trust website, the poem does not refer to Brightwell barrow but another site which is farther away. I still think on a misty day Brightwell Barrow is very picturesque.
When looking across to Brightwell Barrow from Wittenham Clumps - or from road and railway whilst travelling south through Oxfordshire - something always tugs at my heart when I set eyes on this lonely outpost.
Brightwell Barrow lies just under a kilometre from Wittenham Clumps, atop a ridge in the middle of a vast field. The only marker of its position is a large tree growing on top of it; this tree adds to the sense of romantic isolation, and enables it to be seen from miles around.
Like Port Meadow Round Hill, I keep meaning to actually walk up to it someday (especially as there's a useful footpath), but in the meantime, I can't help but wonder about the society that built it, and presumably lived at Castle Hill on Wittenham Clumps. It's very easy to stand up there on a blustery day, and imagine a ritual procession walking the exposed ridge to honour their dead ancestor, lying so far from them, and yet so near, given the topography of the area . . . the essence of the ancients is very much in evidence at this Oxfordshire landmark.