Hello from Georgia, USA After some research, I have decided on making a deep bed system. I want to have a foundation that has a stone or cement 8x8ft wall structure that goes 3ft above ground to contain the compost matter. It will have no floor so that more microorganisms can surface and be eaten by the chickens. Does anyone have any links or recommendations on how to make this deep bed foundation? This is how I imagine doing it (I have no prior construction experience): - Create an 8x8 concrete footing that is 1ft underground - Stack solid cinderblocks reinforced by concrete until it is 1 meter above ground. - make a gravel drainage system covered by landscaping paper around the perimeter with perforated pvc at the bottom that slopes down 1 inch per 4 feet. Once I have this established, I want to experiment with cob to create the rest of the structure. When making the ventilation, should I install a chicken wire window on each wall that has adjustable flaps? Or should I just have one wall entirely open with chicken wire that I can cover up with plywood when very cold? Or should I scrap the cob idea altogether and just use wood?