It’s In Norway
Back in Thor: Ragnarok, Thor and Loki track their father Odin down to a cliffside in Norway. There, he passes away, vanishing in a golden/orange haze. This could just be what happens to Asgardian royalty when they die – perhaps it signals their passing to Valhalla? – but some fans think the colouring of Odin’s disappearance could be important.
It could be a clue that the Soul Stone is in Norway, with Odin having been hoovered up by the Infinity Stone upon his death. Thor also later has visions of his father throughout the film, which could be a product of the Soul Stone. The clincher here, though, is that Iron Man 2 featured Norway as a “hot spot” that S.H.I.E.L.D. was keeping an eye on. Another of their hot spots was Wakanda, a reference that eventually paid off eight years later.
Likelihood: I can see the thinking here, but it’s worth remembering that Ragnarok‘s visit to Norway only came about during the film’s reshoots, as director Taika Waititi thought that the original New York location of Odin’s death wasn’t a grand enough setting. Maybe we’re putting too much faith in the folks at Marvel, but we have a feeling they’ve had a plan for the Soul Stone longer than that.