Posted byon May 20, 2017.
Last updated byon August 9, 2017.
The only clue here is the actual hologram.
In case you don't remember who the person in that hologram is: It's the Stationmaster in Agartha. Go to Agartha and seek him out on the main platform.
After finding the source of the transmission, you will be given the following mission: The Angry Earth.