Mark Vander Meer of Missoula, Montana wasn't trying to build a hugelkultur bed. He just threw some spruce in a pile out of site. Then a year later he got rid of some fill dirt and piled it up in the same place.
Now it's the lushest spot in the neighborhood!
Hugelkultur is a fantastic method of providing crops with a continuous supply of moisture and nutrients, with the help of rotting wood at the core.
To intentionally create a hugelkultur bed, you start with a large center of wood: twigs, branches, logs or even whole trees. Over time the beds are loaded with organic material, nutrients and air pockets for the roots of what you plant. Eventually the deep soil of the hugelkultur bed becomes incredibly rich and loaded with soil life.
As the wood shrinks, it makes more tiny air pockets - so your hugelkultur becomes sort of self tilling. The first few years, the composting process will slightly warm your soil giving you a slightly longer growing season.