From Rogschard's wiki
You step into the dingy inside of the maintenance shafts. Countless cables, ducts and air-vents run in all directions.
- Mu'ngstint the Drainfly in her nest.
- Various Male Arachnid and Female Arachnid enemies through the door north.
- Can only be accessed through the vents after starting Mu's nest (quest).
- Available since v0.2.1.0