>>2243577>>2244323A good book on this subject I have found is "The $50 & Up Underground House Book" from Mike Oehler.
You need only polyethylene(or other non degradeble) plastic foil as a moisture barrier between the earth and the wood.
And then you are able to build completely underground while also getting light and air into the structure.
The book itself is quite entertaining and the author is based.
Here is a link to the pdf:
https://library.uniteddiversity.coop/Ecological_Building/The_$50_and_up_Underground_House_Book dot pdf
