I am doing a lot of property clean-up this year and all of the woody materials will go into new hugelkultur beds. Yes. I conceive of the beds as on-top-of the ground structures. I am on sandy soil and a like to dig (being an archeologist now retired) -- but I have found that garden soil really does not like to be turned upside down. Plants grow in top soil and if you turn it under the plants will not do as well. To me hugelkulture technique is simply the next concept after no-til.
On top of the ground is the way nature makes soil.
I hadn't thought of throwing bones in, but my dogs eat a lot them so
bone disposal was becoming a problem. Thanks for the idea -- Ill toss them in with the woodies in the hugelkulture beds.