Hi folks,
I have just come across a very interesting project connected with KEYA( see thread newLakota Horsemanship Calendar - Keya link by ELK Woman).
I remembered a very good documentation about terra perdita in Amazonia and the old craft of the Indios to enrich poor soils with special charcoal. Some of it is still a miracle but I think they have a good enough idea by now.
If you are interested you should be able to find more information on the net.
In the Berliner Zeitung there is a very good article about it and I will translate it when I have a bit of time.
Here is the link for the time being.
http://www.berlinonline.de/berliner-zei ... index.html
Take care
RuemHart