The Shifting Halls
The Shifting Halls is the northernmost region of the World Below Mehnihs. While these caverns are a mix of Metamorphic, Igneous, and Sedimentary stone, they are some of the weakest caverns under Stehreel, prone to quakes and trembles. Inside the region, none care to name it, but outside of it the whole region is referred to as the Shifting Halls. The La'a'Nex Tribe of Abyssal Demons dwell in these caverns.
The Immovable Depths
The Immovable Halls is right through the center of the World Below Mehnihs. A contrast to the northern caves, these caverns are stable and difficult to shift, much as their people are. As with most lands held by the Abyssal Demons, they have few names for the different cave structures within this region, but outside of the region they are universally known as the Immovable Depths. The Ya'a'Chem Tribe of Abyssal Demons dwell in these caverns.
The Seething Cauldron
The Seething Cauldron is the southernmost region of the World Below Mehnihs. Containing some of the heartiest magma lines and richest Igneous caverns, this region is known for its violence, its danger, and its fire. One of the few lands of the Abyssal Demons where those within the region have a name for it, all universally know these caverns from their northwestern border down to the edges of the frozen caves of the southern pole as the Seething Cauldron. The Qa'a'Tem Tribe of Abyssal Demons dwell in these caverns.