The city that just scratches the surface. Shadow Elementals make their night lives in this south-western desert city, while the day is spent underground in the Em caverns...
The complex network of tunnels that run all throughout Loputon's underground. Only Shadow Elementals know how to navigate them, and they guide traders, mercenaries, etc. who use the Caverns to get to different cities and villages safely. The King hasn't discovered them yet.
The Black Market. It is at the centre of the Caverns - just beneath the capital - where the entire underground is pretty much hollowed out for miles. Traders set up their stands around the thick stone pillars that hold up the city to protect against earthquakes.