Hello, I have a large hill, (+5000x10000x10000) on my property with very steep edges, and now I've decided I want to utilize it by building an expanded earth cellar/shelter/man cave.
How do you go about it?
How were earth cellars constructed in the past, did they dig out everything, build, and then refill? Is it possible to build a form just below the excavated level and then pump in concrete? Insulation?
Best regards,
eld...
