You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
Scratch that, go with what riff429 said. Look on the map and zoom in all the way. Head south from the Vegas area, or look around Novac. Look for a squigly road and at the eastern end of that road is Black Mountain. Hopefully that helps moer.