fireplace surrounded by sculpted cob - a mixture of clay, sand & straw - that absorbs the heat from the fire and stays warm long after the fire is done burning. Much more efficient than a regular fireplace (which can have a net cooling effect).
All About Cob: A Sculptural, Natural Building Material
Cob sheds made of clay. Who knew that all this clay was good for something! Cob is an earthen mixture that is used to build fireproof, earthquake-resistant, natural structures from homes to pizza ovens.