subterranean city carved into cavern walls with glowing crystals underground civilization illuminated by bioluminescent

abysses ai almond ancient animated anime bacteria beneficial bioluminescent blue buried cartoonish carved cave cavern chasms city civilization crystals depths earth erdball flora friend gems generated globe glowing grotto gut highlighted hollowed hub illuminated innovation mayan member mesoamerican nut phosphorescent probiotics quaker radiant rhinestones society soil spotlightlit style subsoil subterranean tech technopolis underground walls