Editing Order of the Obsidian Mirror (section)

===Zimovkiysk II===
Zimovkiysk II is the homeworld of the Order of the Obsidian Mirror. It orbits a young class F star near the outer edge of its habitability zone. The world is marginally smaller than Terra but possess the same surface gravity and a similarly strong magnetic field that shields the world from the ravages of it parent star and gas giant neighbors' radiation. 

The atmosphere is ideal for human life, though the average temperature of the world hovers only barely above the freezing point of water. Only the equatorial regions are free of permafrost year round and experience a moderately warm summer. The sub-tropics and mid-latitudes are generally covered with taiga and boreal woodlands, though due to the planets intensely active geology, volcanic springs are plentiful and act as oases of life throughout the frigid landscape that dominates the vast majority of the planet.

The planet is inhabited by nearly a billion souls, however most of them are transients moving through the trade route the system sits along, pilgrims that have come to visit many shrines and cathedrals that dominate the wintery landscape, and wealthy nobles wishing to partake in the reputed rejuvenating powers the more blessed springs are believed to have. The world is peaceful, thanks in part due to the extreme effectiveness of the local Adeptus Arbites "lead" by the Order of the Obsidian Mirror.

Facilities of the Order are scattered across the planet, but the main fortress covenant is completely isolated from anyone not directly involved in the Order's activities. Located on a small sub continent surrounded by ocean, the fortress is protected by miles of minefields, and towering rings of walls bristling with weaponry both terrestrial and orbital. On the island itself massive domes hide the Sister's activities from prying eyes located in the sky's above.  The domes also have different biomes for training purposes.
They keep an isolated prison on a polar island, probably buried deep beneath the surface.  it's cold enough that most equipment that isn't specialized to deal with the extreme cold has problems and surrounded by miles and miles of ice that's been swept bare by the gale force winds. Given they like to accumulate data, I doubt that most prisoners they take would be executed on the spot, which is probably more of the norm in other Orders. Death is of course a mercy to anyone who gets dragged into there.  'Rura Gitmo'