The Granichny (Russian: Граничный - Eng: [of the] Border) belt is located between the orbits of Gagarin and Muromets, in the outer-rim of the Yasny system. Aside from Muromets, Granichny signifies the border of the system, hence its name. Seemingly an ordinary asteroid belt, it is home to the larger rocks within the system - planets that have collided during formation were ground into smaller pieces over time and remained here. Pale asteroids of the Pepelnitsa belt can be encountered here; evidence of Gagarin displacing them from the mid-rim.
Installations
There is a single outpost this far out in the system, aptly named 'Granichnaya' station. Much like its Angar cousins in the Pepelnitsa belt, this station hosts a myriad of mining operations on the surrounding asteroids - though that is only its secondary purpose. Primarily, Granichnaya station is an observatory set up to survey future colonisation of the outer Yasny system, as well as a range of other projects which are classed top secret. Aside from that, it facilitates transit to the unnamed dwarf planets in the outer belt. With some residential infrastructure available and recreational facilities on offer, the station is not as isolated of a location as its placement might lead one to believe; and is quite popular with blue-collar workers.