Limbo

The signal originates from the remains of an antenna-like structure. Exploratory probes were dispatched from the … to the surface to investigate the matter more closely. What Science Officer … found was a cavernous vault that, while easily pried open, was evidently the last safehouse and refuge of some long-dead race of aliens. While reasonably technologically advanced, it seems they never reached for the stars and perished to some planet-wide natural disaster. The vault is immense, housing thousands upon thousands of black boxes that the … has determined to be data storage devices. A Special Project has been prepared to decode their contents.

The command below will trigger the "Limbo" event in Stellaris:

When this event fires, you can choose between the following option:

• OK
  • Start special project: In Limbo