Southern Passage

The Southern passage is a location in the Zion Canyon. It is a connection of tunnels and passages that travel back to the Mojave Wasteland after the Honest Hearts add-on. This is where the journey into Zion begins.

Layout
This is simply the entrance/exit to/from Zion Canyon. Therefore the layout is simple.

Notable loot
In addition to the cave, once you have completed the main story line and watched the final cut scene, in front of the cave entrance there will be a footlocker which contains some unique items in the add-on, like
 * Salt-Upon-Wounds' helmet
 * Salt-Upon-Wounds' power fist
 * Joshua Graham's armor
 * Chalk's headdress
 * Daniel's outfit
 * A Light Shining in Darkness
 * Scripture

Appearances
The southern passage appears in the Fallout: New Vegas add-on Honest Hearts.