There sort of is one already, the winter town, which has a population of ~50,000 in autumn and winter, and ~10,000 in spring and summer.
So you wouldn’t need to build a city, just expand the existing town.
Just a backup in advance of the detumblring
There sort of is one already, the winter town, which has a population of ~50,000 in autumn and winter, and ~10,000 in spring and summer.
So you wouldn’t need to build a city, just expand the existing town.