From Selvanus Binary:
Selvanus is also home to the Vaults, an artificial moon that remains in geosynchronous orbit above the High Fabricator’s forge complex. Many believe that items of incredible technology from aeons ago lay housed on that satellite, waiting to be studied and possibly replicated. Only the revered members of the Quorum Primus and the most revered of the Selvanian Priesthood are allowed inside, and even they do not all have equal access. All members of the leadership know that there are many secrets they are not privy to, for there are levels upon levels within the complex that deny them entry. Those who have entered are only able to speak of their detached amazement and fear at what lies beneath its surface, but no one is able to describe a single item. It is believed that only the Quorum Primus has access to the entire contents of the Vaults, and most have not accessed it in many decades.