I love the idea of hugelkultur and have tried it a few times with some success- I expect it to increase with time as the underlying logs break down.
Fallen trees and branches and logs used as base for raised beds that will ultimately be fertile and require less water than traditional beds- especially after 2-3-4 years.
The next hill I hope to make is when I help some friends build at least one good sized herb hill or herb spiral. The hope is to make a medicine and tea garden as well as supply the the neighborhood bees with food.
May do a basic circle or spiral but I am thinking that a keyhole setup will allow for easier planting, weeding and harvesting.
Found these great images online and will add more as the real hills get assembled and used.
**Planting and then long term as the wood breaks down and feeds the soil for years.