Okay guys I need your help big time. There is a rumor going around my workplace that there is an umarked vault somewhere far to the Northwest of REPCONN HQ. It is said to be entered through a cave. Apparently as you enter you will see that the vault door was blown off from the inside and is laying near the entrance to the cave. Now I have been searching for 2 hours and havent come up with diddly. Have any of you guys found anything like this? feel free to talk about any other cool unmarked places you have found as well. Thanks in Advance!

You could use G.E.C.K. to look for that vault, couldn't you? I've read something about that on Fallout 3 forums where some people did this to find hidden stuff