One cell of the Peoples Liberation Party. It is a large underground cavern that is supported by crystalized pillars.
Religion is banned. And it seems that here technology>magic
It seems that this is maybe a mine/forge/tech center for the Peoples Liberation Party.
There were several leaders with grandiloquent titles.
There is a mine, ventilation shafts, a laboratory district, an agriculture district.
The mountain dwarves are in charge and put hill dwarves (like the formerly formerly Imprisoned Dwarves) to work in the mines.