Really like this idea African Keyhole Garden. Normally the compost area sits on a hill and the garden bed slopes down from the center outwards. As it rains or water is added to the compost. the tea runs out the bottom on the the beds below.
The Valhalla Project: Have you ever heard of a garden that waters and fertilizes itself? We certainly had never heard of such a thing until last week when we stumbled across a short video showing women in Africa building a "keyhole garden.