For some apocalyptic inspiration, look for pictures of the abandoned Chernobyl area in Ukraine. It happened merely a little more than 22 years ago, but nature has fully recovered (and more) in the meantime. Granted, no bombs went off there (except from a hell of a non-nuclear explosion in the...
Are you using the Restoration Project, the MegaMod or the independent EPA mod?
And do you have EPA on your map and looking for a way into the bunker, or are you looking for a way to find the EPA's map location in the first place?
@ Killap & Darek
If I understand correctly, the crash I had in the Hubologist area had to do with having too many items on me and in the car trunk (I used them as barter currency :)). So if I'll get rid of all unnecessary items the bug won't occur, would it?
The same bug (the fruits referred to as "apples") appeared when Ann from the Vault City Village first asked me to get her the food delivery. All subsequent references (including the Pip Boy status) called them just "fruits".
If I understand this correctly, if I don't speak to Juan and Vikki, the crash won't happen at all, right?
But then, how would I get to the Hubologist stash? IIRC the guard there asks question which require you to read the Jan-Vikki holodisk... Or am I wrong?
Regarding the Hubologist crash, the only thing joining the Hubologists changes outside of their base is IIRC your reputation (and reception/conversation) in SF-China; maybe the crash is related to this?