 uh there are roving gangs on the surface uh the population basically survives in underground bunkers uh very large encampments and uh and it's not everybody that gets to go in the bunkers most people slug it out on the surface and if you go out to 250 years you find the only inhabitants are the people in the underground bunkers and the best of the world is barren basically and if you go out as far as 300 years