In the vision after you fall from ghauls ship, the traveler is having pillars raised up to it (guessing IO, but could also be what is happening under it in the city...just slow).
So I'm wondering what happens if those pillars actually did manage to make it up to the traveler...what was the purpose of it doing that.
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Io has light emitting everywhere ,so having the traveller transfer light to the pillars from Eden (the circular structure on Io) it would make sense as the land was being terraformed ,I believe the traveller created those pillars seeing as Io is a moon of extreme volcanic activity ,and having humans there wouldn't be possible