The changeling hive and surrounding deadlands. Rocky, inhospitable wastelands covered in spires. Abandoned.
The Pitt. Changeling made fortress foundries and factories that make up the sum of all changeling industry and production. Helps fuel the changelings war economy. Super heavily defended. Abandoned
The giants graveyard. A section of the deadlands where numerous starships crashed into the ground during an encounter. This area is where the changeling swarm gets it’s resources to feed the Pitt’s factories endless need for materials. Worker drones stripped the crashed vessels clean of all usable material. Lightly defended. Abandoned
The junkyard within the Underground. (Undertale). This area is where the changelings took refuge for almost a century. Underneath the mounds of garbage and water is a massive hollowed out living space large enough to house 1000 monsters, but is not accessible without flight or magic.
The Rock kingdom. (Undertale) A conquered kingdom in the Underground that fell during the second Imbalance war. Home to many rock and mineral based monsters who live under changeling occupation. Status, puppet state. Strongly defended.
Hotland Hive- On the edge of Hotland, the farthest part of the Undergrounds cavern wall holds the center of the changeling population who hollowed as much stone out as possible to house it’s population, industry, and magic. Super heavily defended.