[sundvor]

I read(1) that only the northern part of Seoul the city is in striking distance of their (somewhat limited in numbers) long range artillery, and that there are lots of shelters e.g. the way the subway system doubles up as being bunkers.

However the civilians part between Seoul and the DMZ, home to millions, is not going to fare exceedingly well - if the North decides to "waste" their ammo on civilians instead of the military that will be hitting them back.

1) https://www.quora.com/Can-North-Korean-artillery-really-kill...