Originally Posted by wayrad
Emergence has a brief beginning sequence in a bomb shelter, but no underground society.
I'm pretty sure I've seen a very similar query answered elsewhere and it isn't any of the books I can think of now...
Yeah, guess you're right.
There's this short novel I think I read in some Golden Age of Sci-Fi anthology that sounds exactly like it. It was from the 40's I think. Probably not that but I remember tunnels and humanity having been underground for ages and hatches, and someone that had to be fought past.. Either roving gangs (or mutants) in the tunnels outside the (underground) communities