Board Thread:Theories and Rumors/@comment-26542216-20160116041949/@comment-31631963-20170625154656

OverlordRocks wrote: Possibly. There may be hundreds, maybe even thousands of sub-realms (or Pocket-Realms) located in one given realm. But at the moment, it is unknown how many pocket realms are in Ninjago alone, never mind the other 15! Maybe the Digiverse and the Dark Island are each sub-realms of Ninjago. On that note, it almost seems that the Underworld might be a sub-realm.