The Red Zone

"'The fields that we looked down upon became a lethal radiation zone.' Rachel Hunter"

The Red Zone is a dangerously irradiated landmass surrounding Tier City created by the fallout of three nuclear bombs that were believed to have devastated Old Earth.

"'Praise be for The Red Zone.' The Preacher"

Max Hunter's uncapped Speeder crash lands in The Red Zone where he is encouraged by his Wiki Unit to walk towards a remote communications complex.

There are many mutated life forms in the wilderness that have survived the nuclear fallout.