Cache of the Ancients

Cache of the Ancients is a extremely large megastructure built around the star Ponimula. An Alderson Disk, it appears as a disk 2.3 AU in radius, or 690 million kilometres across.
Situated around the star Ponimula, it is positioned so that the star's habitable zone occupies the majority of the structure's surface
== History ==
The Cache has had a extremely long and varied history, with radiometric dating placing the biosphere's age at 900 million years old. The structure would've been built first, and would've taken many millions of years to fully assemble, placing most estimates of the age of the Cache at approximately 910 million years. Very little is known about the history, but there is evidence to suggest at least three intelligent habitation in the past. Obviously, the first is the beings that built the disk in the first place, and they occupied the structure for a little over ten million years, before ultimately disappearing. Another hundred million years passed before the Cache itself evolved intelligent life, this time building The Society, a militaristic and expansionist nation that just fell short of uniting Cerlus. With the technology of the Cache, they expanded and conquered every civilization in the cluster. However, an outside invasion from a "Dark Forest" empire obliterated The Society, and exterminated their species. It is largely because of The Society that Cerlus is as lush and vibrant as it is. 
In the aftermath of the invasion, on a thousand worlds scattered throughout the cluster, the remainder of The Society, sterile and emancipated, constructed their last revenge on the invaders, a device known as Kildathu. An extremely advanced weapon capable of accessing vacuum energy and directing it, Kildathu has the power to destroy anything, given enough charge. This device is stored on the Cache, and Imperial scientists are to this day attempting to access it and crack its secrets. 
Finally, the last creatures to discover and colonise the Cache, were only a few million years ago. Known as the Yitarul, they were an avian creature native to the lost world of Huygar, a legend throughout Cerlus. They lived on the Cache for only a few thousand years, before abandoning it and the entirety of Cerlus to live on their homeworld, where legend states that they still are today. 
== Culture ==
The Cache is one of the oldest continually inhabited objects in the Imperium, maintaining a population of 89 billion permanent inhabitants. Since it is so large, there are effectively four different colonies on the surface; Cerulea, Aridia, Oceania, and Perma. 
== Biology ==
== Structure ==
== Geography ==
(star characteristics: 9283 K, 2.21 L, 1.8 M ☉)
Category:Frew001
Category:Cerlus Cluster
Category:Imperium of Cerlus
Category:Megastructures
Category:Habitable Megastructures