Earth-cooled, shipping container underground CA home for 30K

I can't recommend Kirsten Dirksen's channel enough to people interested in architecture, energy efficiency, tiny homes, 'green' construction, etc. Literally hundreds of hours of high-quality content - I'm really curious how she is able to find all of these interesting people who are doing such cool things. Channel: [LINK] Some other favorites: Baubotanik shapes living tree branches into building facades - [LINK] Boeing retiree finds meaning inventing micro homes & high speed trikes - [LINK] Extreme transformer home in Hong Kong: Gary Chang's 24 rooms in 1 - [LINK] Earth-cooled, shipping container underground CA home for 30K - [VIDEO] Yokohama narrow tiny house "breathes" & attracts local nature - [LINK]

I live in the desert as well. I'd love to have a house with better insulation to spend less on AC. Earth sheltered homes seems like a great way to do that (though there are other problems - e.g. moisture, heavier roof). [VIDEO] , [LINK] - here's a couple examples (she has visited others as well. Short of that I'd settle for a basement. Someday perhaps.

I think they had someone w/ some engineering skill do it, so it was structurally sound and all... I'm not sure if this is the exact same one I saw, but it's similar enough... [VIDEO]