It is pronounced “hoogle culture” and it is a crazy cool raised bed design!
To build a hugelkultur, just pile old wood up and throw soil over the top of it and start growing. Then, over time you will have these super-fertile garden hills that self-irrigate!
I must try this at some point, but it might be hard to fit in my yard. I do have some space behind my bedroom though. I will have to build this after my raised beds are done!
Article here: http://www.richsoil.com/hugelkultur/