This page is a work in progress.

Here is a video of the creator of this building method, one that is cheap to build, takes little energy to maintain and make comfortable and that can be more easily hidden from the regulatory and oppressive forces of the state.

https://www.youtube.com/watch?v=8B6xR3T37gI

Here is a link to the official website of Mike's book.
https://undergroundhousing.com/