The term is archaic, calling upon the ancient language of the magi, and those versed in the eldritch arts. In the more vulgar argot, terms such as scrying room and equally mundane names are bandied about. The fact that such limited terms are used to describe the proper mystic's psychomanteum demonstrates how little they actually know about what occurs within.
The Rhenn Plains are serene and peaceful, beautiful, and quiet as if nothing had ever had happened to it, hiding away it's violent present and past. During some time ago, the countries needed land to fight on, for they did not want war to come to their home, so they chose the Rhenn Plains, Armies met there and men died on the lands, so the land has been empty always. But now there has been set an outpost and they are beset by the goverments wanting to keep it free, will the soldiers of the barracks prevail, or fall trying?