The ranges of different natural building techniques out there are many and all of them are appealing. These wall systems use locally available renewable materials and focus on minimizing the negative ecological impact.
Walls and foundations
Various methods of foundation and walls practiced in traditional construction methods in India as well as new construction methods evolved by natural builders from around the world is portrayed here. You can see various documentations on walls and foundations here, which can help you in understanding the different dimensions in making natural homes.