This quest is activated once the main questline of Honest Hearts has been completed. After completing either Flight from Zion or Crush the White Legs, the Courier will end up in front of the Southern Passage. There is a footlocker in front of the passageway that contains the following items:
Once the Courier takes the items from the footlocker (or not), they walk into the Southern Passage and travel to the Northern Passage to complete this quest.
Quest stages
Stage
Status
Description
1
Return to the Mojave via the Southern Passage.
Notes
Some containers in Zion may reset when the player returns to the Mojave Wasteland, including the aforementioned footlocker.
The player also has the option of killing either Joshua, Daniel or Follows-Chalk, triggering the Chaos in Zion quest, then simply finding the map to leave Zion, passing up on all quests in the add-on.
The items in the footlocker will not be there should the player have acquired them beforehand.
You don't need to take anything in the container.
Originally, there would have been a note left by Daniel located in the footlocker at the end of this quest.