The name is not official and not yet officially released.
- David Scott has mentioned about a world map overhaul in a blog, most likely this may be part of the world map overhaul.
- When you enter the Inferno Cavern, you will see his multiple bases. They are like Inferno Outposts, shown in the above pictures, but, if you view/attack it, it will resemble an Under Hall.
- Unlike the overworld Outposts, you cannot take over the outpost after you have destroyed it.
- Kixeye is still working on a world map for the underground Inferno Yards.