Among the numerous mountains within the Hiraishin Mountain territories is the largest mountain in the shinobi world. Reaching so high that its peak vanishes among the clouds and is mostly covered by snow. In fact, the entire area is by far the most dangerous within Lightning territories. This is due the chaotic weather change from blizzards, thunder storms, radical winds, or a combination of them all. There are no known people living here and is home to creatures that would give even the most skilled of shinobi a challenge.
From the outside all one can see is a series of buildings built into the mountain side. The main entrance is a two story building with various paths leading to smaller buildings that are built into the mountain. Once you enter, you go down a flight of stairs that opens up into a massive cavern where a huge industrial factory is laid out. Basic ninja tools are being produced in mass and are being loaded up into carts that would make their way through the mountain and down to the village’s arsenal where they would be sorted. The factory is a testament to the budding industrial might of Yamagakure and the Lightning Territory as a whole. The complex is run by the noble Badger clans that make this mountain their home.