One didn't need a map to differentiate the territories occupied by the aristocrats and the vultures in the Lower Abyss anymore. In fact, after over fifteen years of development, the lands occupied by the myriad races have experienced skyrocketing developments in agriculture and industry.
The constant flux of soldiers and conscripted vultures from the earldom to the Nameless Valley made it easy for the curious souls from the aristocratic camp to sneak into vulture territory through the borders, and vice versa.
Some cities were built to serve as channel nodes connecting the two territories, but the most common term to refer to those cities was 'World Gates', as though going through these cities was the equivalent of stepping into a whole new world.