Suboxide
there are still the 'Old Lands' and maybe alot more.
We have eplored a little bit of the old lands in Episode2 (aelius dunes, olkern lake and almati wood) and the last one is still accessible ;-)
And we are teleported by either Kami or Karavan to the Almati Wood so why shouldn't they be able to teleport us to an other planet? ;-)
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