Venus and Tarius both have heard or read, that while the precise date is unknown, it was suppose to have been destroyed shortly after the fall of Republic forces Byzantium Secundus to the noble factions and prior to the closer of the Jumpgate in 4012. Local Republican forces lead by the Prime Senator and the noble forces under Count Vassily Alecto clashed within the city and to the north in a large valley. It is said that in a last desperate suicidal act, the Prime Senator released an Atmospheric Intbomb that destroyed all the oxygen in a thousand mile radius, destroying both armies and killing the remaining citizens in the city.
When the planet was rediscovered in 4388, it was thought to be a dead world, but there were a few tribes of nomads surviving in the deserts whom were believed to be the decedents of the various survivors on the planet. Nobles, the Church and the Guilds spent the next two hundred years savaging any and all tech from All-Saints as part of the city was well preserved. Occasionally a hidden trove of forbidden tech is founds in some forgot basement or storage area missed over the years, but it rarely happens these days.
Venus also remembers reading some obscure account that recently that the Avesti has set up a number of outposts on the northern part of the city and in the valley to the north where there is some mining done by the native tribe there. The reason is that it is rumors of resent ‘Husk’ outbreaks in the area.
(OCC –the ‘Husk’ are a form of Undead, like zombies, that no one has been able to scientifically explain, but whom much folklore exists that they are the creation of evil daemons etc.)