Backstory (TL;DR):
I've been searching for an allegory/symbolism for a journey to - and creation of - a colony inside an asteroid.
I played around with Greco-Roman legends, notably Aeneus' escape from Troy and journey by sea to a new land where he created what would become Rome.
But my ever-lovin' suggested Xanadu from Kubla Khan - a paradise that talks a lot about domes and rooves and sunless seas, and it's too much to pass up.
"Where Alph, the sacred river, ran Through caverns...