The northern city of the sixth floor where all hunters are staged, holding at least one unguarded exit to the seventh floor.
At the start of the sixth floor all 360 Hunters are transferred to Zockau, to be released after a 30-hour Grace Period. The opening announcement lists it as holding at least one unguarded exit to the seventh floor, with more in the valley beyond.
Ian warns Carl to stay away from Zockau even after the countdown is done. It lies all the way to the north, and it is where the aliens are; they do not fight fair. Ian's brother was killed there by Vrah while working a food stand, and because the guards did not see it, nothing was done.
A city far to the north of the jungle floor, with guards, food stands, and enough infrastructure to house hundreds of hunters.
The hunters' staging city and the most dangerous place on the sixth floor.