Hi Rebeccadane,
Welcome to Appropedia. I made some changes to Category:Earthen_ovens. If you want to make a page on Double chamber cob oven you can just click the link or type it into the URL (as https://www.appropedia.org/Double_chamber_cob_oven). Let us know if you have any questions and please check out the help.
--Lonny 09:32, 15 September 2010 (UTC)