Some cabins are underground, or in the book’s taxonomy, Earthen. Dan Price’s former home was once broken into and the result was his commitment to live with fewer things, in nature. His hobbit-like home in Joseph, Oregon is complete with tunnels, crawlspaces, and a low-ceilinged bedroom. Using heavy-guage sheeting and wooden structures as roofing elements, he covered the space with dirt to facilitate natural growth above.  Daring Hillside Homes by Diana Budds