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Renewing my acquaintance with Adam's Grave I was again astounded at how sodding huge it is... http://www.themodernantiquarian.com/post/51664 ...and my musings on the volume of material it comprises.
I was wondering if anyone knows of a barrow/cairn/mound which is bigger so far as volume is concerned?
I know that the figures are going to be ever so approximate but it might make for interesting comparisons.
Silbury doesn't count!
Jim.

How about East Kennet?
PeteG

How about Knowth & Newgrange 85m diameter and over 6m tall, that's around 35000 cubic metres*.

*If it was of equal height all over, natch. It's pretty sodding big anyway. Certainly bigger than Adam's grave.

This one - http://www.themodernantiquarian.com/site/7531 - comes to 36,000cu m. roughly. It's a long cairn so is made of rocks, and pretty bigs ones too. I wish someone was brave enough to get out to it and to take better pictures and maybe, even, pace it out properly.

It's not very tall but at 342 m long , Auchenlaich long cairn must be up there in the big volume league .

There are a couple in the cotswolds which are quite hefty. Belas Knapp and Notgrove spring to mind, but I'm not sure how they compare.