A cob cottage in Oregon, with cob garden walls and outdoor fireplace.
PHOTO: NIGEL VALDEZ
Cob proponents Ianto Evans and Linda Smiley.
Habitat for Humanity workers build an adobe home in Santa Fe, New Mexico.
COURTESY SANTA FE HABITAT FOR HUMANITY
Children help build what will eventually be a cob playhouse.
This mudcat made by Kiko Denzer demonstrates the sculptural potential of cob.
This adobe home sits in the foothills of the Sandia Mountains near Albuquerque.
COURTESY LAURA SANCHEZ
Earthbag construction is easy to learn.
Used tires packed with earth can be laid like giant bricks to form walls, which are then plastered.
Earthbag construction lends itself well to curves and arched features.
The author's passive-solar home in Colorado combines rammed-earth and straw-bale techniques.