Cob (material) Building a wall out of cob.
Cob, cobb or clom (in Wales) is a natural building material made from sand, clay, water, some kind of fibrous or organic material (straw) and earth. Cob is fireproof, resistant to seismic activity,[1] and inexpensive. Earthship. South and East view of an Earthship passive solar home Earthship typical floorplan Earthships are primarily designed to work as autonomous buildings using thermal mass construction and natural cross ventilation assisted by thermal draught (Stack effect) to regulate indoor temperature.
Building a Roundhouse with woodhenge and cobwood Natural Building How-To: Making Earthen Plaster (PART 1)