The Divide

 is a location only mentioned in Fallout: New Vegas. It is mentioned by Johnson Nash as being wracked with storms, and is also mentioned by graffiti at the nearby canyon wreckage. Cass also references it, saying that she learned how to use dynamite because twisters in the Divide often block off passages.

It is unknown which real-world location this corresponds to, as there are several "Great Divides" in and around Nevada, not to mention the Grand Canyon.

At the end of the Dead Money DLC characters reference a battle at "The Great Divide" between the Courier and (most likely) Ulysses.

Appearances
is mentioned in in Fallout: New Vegas.