The name Abyss World invokes a sense of wild, dark, and desolate feelings.
But in reality, when a civilization develops to have supreme, primordial god-level existences, such a world couldn't possibly be too bad.
At least, the home base of the Fallen Devils doesn't feel primitive or backwards.
Even, as a captive, it's quite an eye-opening experience for Dean McKenzie.
The entire base is built on a big mountain.
But this mountain is not a naturally formed one. Instead, it is made out of resources used to create artifacts.
The materials of the mountain, like an artifact itself, are astonishingly precious. Its treasure was not just constructed by simply stacking these materials into the shape of a mountain. Dean McKenzie could feel that the threat this mountain imposes on him go beyond that of a primordial god - it's terrifying beyond measure.
On top of the mountain, various buildings and magic seals make the whole mountain shine brightly.