This area is sometimes considered the ‘central’ area of the underworld. It’s where most of the people who don’t consider themselves part of any particular civilization live. Scattered in small towns across a wide variety of caverns and environments. Wild magic is more common here and storms of magic regularly rage through the area. Beastpeople are most common in these areas.
Various weird ranches are a common sight. From giant spider ranches that produce fine silk to farms that harvest blood and venom from magically corrupted giant lizards.
Independence is highly valued. Reality being a little more unstable here than other places makes it a bit more dangerous than where the major powers have settled. So those that come here want to be away from any big authority. Even the big city, Raknar, makes a point to value freedom over order and doesn’t project any power or influence past it’s walls and forts.