Grand Staircase map holotape

Grand Staircase map holotape is a quest item in the Fallout: New Vegas add-on Honest Hearts.

Gameplay
The holotape contains a map of the Grand Staircase, which Daniel intends to use to safety traverse the region upon evacuating the Sorrows.

Location
It is hidden in Morning Glory Cave behind an average locked door in the southern section of the cave, inside of a Survivalist cache.

Related quest

 * The Grand Staircase