Grand Staircase

 is a an immense sequence of land that stretches south from Bryce Canyon National Park through Zion National Park and into the Grand Canyon. The player is tasked with finding a map of the region and can then choose to evacuate the Sorrows to Grand Staircase. Here they set up their new settlement with the help of Daniel.

Appearances
is only mentioned in Fallout: New Vegas add-on Honest Hearts.