Been doing some research and a question to ask.
Buried Domes are usually quite large in square footage, but a smaller footplan (and structual integrity of the Monolithic Cabin offered by the smaller footprint perhaps offers a more practical option).
The 'muse' of buried interconnected Cabins (perhaps 3 in total) is a possibility for a future home. But the future site is Texas is the middle of an 'expansive soil' area (in fact Henderson County, Texas). Planning permission/Coding isn't a problem (sometimes Texas is a fantastic place to be, other than the 110 degree summer days).
I've seen threads here about burying the 'domes' (and the problems involved), but has anyone seen the Monolithic cabin buried under 'nice insulating' earth. Coming originally from the UK, I've seen 'buried' Quonset huts (except we call them 'Nissen Huts', lasting 60 odd years since their original construction date). The Insulation provided along with the longevity of the building caused buy burying the thing seem to appeal.
Pretty much looking at an Direct Exchange Heat pump setup buried below the site to help with cooling.
BTW looking at purchasing the 'standard' portable Cabin from Monolithic direct and placing them on site. Beginners/Dreamers question I know, but hopefully some light in the tunnel