Chaos in Zion

Chaos in Zion is a side quest in the Fallout: New Vegas add-on, Honest Hearts.

Quick walkthrough

 * 1) Kill any quest character (Joshua Graham, Follows-Chalk, Waking Cloud, White Bird, or Daniel).
 * 2) Retrieve the Zion Canyon map from within the Sorrows Camp.
 * 3) Return to the Mojave Wasteland.

Detailed walkthrough
The quest begins when the player kills a storyline-essential character: Follows-Chalk before reaching Graham, Joshua Graham himself or Daniel. The Courier is then required to travel to White Bird's Cave to retrieve the Zion Canyon Map. The Courier then has to travel back to the Southern passage, through which he can return to the Mojave.