In The Legend of Zelda: Breath of the Wild, just inside the entrance to Vah Medoh, slightly above head level, and before the column of rising air, there's a greenish column of light (video). Image:
It appears fixed in space relative to the dungeon—I can look at it from different angles, etc. It seems like maybe it's only there at night, leading to some speculation that it might be a weird glitchy copy of the light from Mount Satori, but I'd really like to know for sure before I beat the boss, given that afterward I won't be able to get back in.