This one is called the ECO-DOME, it is made out of long sandbags filled with a mixture of earth and cement and coiled on top of one-another, like an igloo. This one is made of one large dome (main living area plus four
smaller domes around the main structure as bedrooms, bathroom and kitchen. This technique was developed by Iranian architect Nader Kalhili and is a way to build simple inexpensive (although labor intensive) shelters.
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