Vale of Creatures

The Vale of Creatures is a particularly unpleasant part of the Realm of Chaos/ The Warp, due to being located at the border between the domains of both Slaanesh and Nurgle. It's a gross place, combining the urge to have sex squickiness of Slaanesh with the urge to survive and multiply into a big family of Nurgle. The result is a landscape of living flesh, where swarms of small independent Daemons with aspects of both Slaaneshi and Nurglite Daemons are literally birthed out of trypophobe-panic-inducing holes in the rotting flesh-earth, all sorts of Mutants, Daemons, Monsters, Beastmen, and other horrid things being birthed out, some living very briefly and others living long enough to go into a slaughter-orgy of each other, with the survivors often making their way to Realspace to become particularly hideous gribblies for people to encounter. The Vale of Creatures is so disgusting, that viewing it as a mortal has the chance of inflicting a curse that makes you see the natural world as a horrid, unnatural, Chaotic place, resulting in the only way to stay sane being to hole up in a city as far from nature as possible.