A Rift can be found above Zaros's podium in the Empyrean Citadel during Missing, Presumed Death. It cannot be interacted with in any way, including examining.
Although Zaros was not on Gielinor during the quest, the rift nevertheless hints towards him watching the events that transpire, and players feel a chill go down their spine if they support Zaros during the quest. The other gods present do not seem to notice the presence of the rift.
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