In addition to his sketches and narrative of his designs and concepts, he tells of what worked and didn't work in his experience. He also draws very telling and sometimes humorously critical cartoons on his opinions of his chosen profession,our relationships with our planet, and himself. Wells is a pioneer in the concept of Sustained Architecture. This book is very informative on what to and not to do when considering an earth sheltered home. A great gift to the environment for the new millenium.
Many old building remain in South America from the time of the spaniards.
The book lacks detail on the rammed earth system employed by the authors. More drawings and pictures would be very useful to translate modern technology to underdevelopped countries.