Cob Building
Cob is a natural building material made from soil, water, fibrous organic material, and sometimes lime, sand or clay. There are ancient cob buildings throughout the world that are thousands of years old. Cob can be modeled and sculpted into beautiful forms.
The building featured in this picture is in Mesa Colorado at Six Eagles Haven. They offer summer workshops in cob construction. See more information about it at: https://permies.com/t/133588/permaculture-projects/Cob-House-Build-August-Mesa
First Earth is a good movie about cob architecture: https://www.youtube.com/watch?v=fjzI2JDvsNA
There are so many ways to DIY build with cob. Much more information on this and many other topics in sustainable living can be developed with your support.