Yeah, I also had difficulty with imagining the caves, but we have a lot of caves where I live. I basically just combined different features from them and put the setting in the desert lol. To me the caves sounded like an awesome place to be. If the world was over I would want to hang out there, but would probably feel extremely different about that after being in one for a month.
Also, I thought it was really neat how they used mirrors to bring light in for their crops.




