Thanks for the idea.
I want one n the worst way. We had pizza made in one by a bakery near Charlotte NC. Best pizza ever! And their bread and pastries...oh my
This site has pictures.
http://www.traditionaloven.com/articles/228/earth-clay-pizza-cob-oven-building
Also recommended is the book Build Your Own Earth Oven 3rd edition by Kiko Denzer