According to the history of the region, this was once a site of an ancient battle. A grand war happened here, but there was no single record about it except for these rumours and mythic tales.
William didn't know if these stories were true or not, but he knew the main problem still was the inner zone. Not a single master who went there ever managed to come back, not even those at the pinnacle of power.
There wasn't a single useful intel about this zone except the description of it. The inner zone was marked by a gigantic toxic green cloud that covered a grand area of almost a hundred kilometres in radius, with thick tongues of thunder hammering through the green fog all the time.
William knew such a scene would be a marvel to behold and witness. As for what was inside this cloud, he knew it would be a very toxic and eroding atmosphere, one that wasn't any different than the one he came through towards this world in the first place.