After touring the archives, Benji took him to the various other areas of the building, including the Resource Exchange Area (which catalogues all of the objects available for exchange with contribution points from all of the subdivisions), the Lecture Halls, Debriefing Halls, and more.
The final stop of the tour was the Training Hall, in which they could train in simulations of various relic environments—mostly all based on relics actually completely explored by other Pathfinders.
And it was when exploring these Training Halls that Kain finally learned the origin of the non-existent constellation on the Pathfinder's medallions.
Apparently, there are several types of relics: