Kri-os

Overview
Kri-os is a death world that has been settled by the Imperium for use as a prison world. Convicts from all across the Ultima Segmentum are sent to this world because of its harsh environment and relative safety of the system it resides in. It currently houses 600,000 prisoners but the number often fluctuates with riots and/or new arrivals from elsewhere in the sector.

Geography
The planet possess a singular continent named Solistus that spans an estimated six hundred square miles and is surrounded on all sides by a ocean of gases mixed with radioactive compounds. It is a relatively flat landmass due to the low tectonic activity of the world. The only points of interest are the prison facilities which dot the continent.

Prisons
The sole purpose of this world is to house heretics and ruffians so it has very impressive prison facilities. There are four prisons in total and each prison rest on the very edges of the Solistus (all of them are on the north,south,east, and west sides).
 * North Prison (Minimum Security) - Perhaps it is a bit of a misnomer to call it minimum security as it is still above and beyond most other prisons. It has comparatively lax doctrines when compared to the rest of the prisons however and the least severe offenders are sent here. Prisoners are fed three meals a day and allowed ten hours out of their cells (typically this means they work in the mines or factories for most of the time). Convicts are allowed to pursue interest and hobbies so long as they don't have a nefarious side to them. There has been minimal problems at this facility thus far and the least amount of executions of the four prisons on Kri-os.