I've decided - without going back to my books to confirm any of the things I think I know, and of course I am willing to undecide - that Hugelkultur is the story behind the worldwide unexplained "pre-history" (a sillier phrase is hard to find) mounds all over the place. The Fertile Crescent area invention or discovery of agriculture discussed in endless college texts and beloved by all is actually the perversion of healthy, sustainable agriculture as represented by Hugelkultur and the like.