Kaldir is a moon of Midr IV. Kaldir ranks among the coldest terrestrial locations in the Koprulu sector. Its gaseous upper atmosphere repels heat, blocks out most sunlight that might reach the surface and produces flash-freezes that occur with barely a moment's warning, and coincide with immense temperature drops which can kill just as quickly. Ursadons and a species of extremophilic bacteria that serve as their energy source are the only two indigenous life-forms of significance that have been discovered on Kaldir to date. Resources are hard to find.