https://netpipe.ca/?page_id=3213 for more details
basically dig a pit smooth it out , aircrete the bottom put in concrete form release cast the top and rotate and join with lower shell then cover. pour a house in 2 days
https://youtu.be/yRQP_ELDEVg?t=361 other aircrete dome methods
https://www.thingiverse.com/thing:3620093 other thing for getting ideas on dirt rock /mixtures.
top shell 14425.56845335329 feet3 / 2(foam) =7212 feet^3 for a 3ish' wall 60' aircrete dome carbon can be added as strengthener according to youtube video.
bottom can be thinner but its better to do it properly the first time plus it needs a good bit of insulation.
20037 feet^3 / 2 for foaming agent = 10000 feet^3 for the bottom shell
made the 4 dome version where topshell is cast then skidded in place on metal bars.
the whole thing could be covered with dirt using soil stabalization fabric , mesh or plastic mesh in layers for strength.