East Kennett Long Barrow 5
Image by thesweetcheat

ooh thankyou.
So it's all a bit of a myth anyway, this pristine and untouched tomb. For all we know they took anything glittery and threw away the bones. Very interesting.

http://www.themodernantiquarian.com/post/33010 - this hill is pristine and undisturbed - guarded by a mythological creature (Northumbrian sheepfarmer) who knows it's his ancestors inside. You can see the berm on the righthand side. There's a right-of-way goes near what may have been the front.

There are a couple of undisturbed round cairns in Smithills.