Not saying it was aliens but whatever that distrubance in a cloud hovering over a mountain in Sweden was very curious in nature. Watch the drone video taken by a skier and come to your own conclusions (any meteorolgoist amatuer or professional please chime in if you have an explanation).
The Youtube comments offer some pretty sweet conclusions:
-The glich is maybe the elektromagnetic interference of the power used by the craft?
-I wonder if that glitch could be a hologram hiding a entrance into the hillside.
-It looks like a invisibility field, but human type because just showing on screens what’s behind, and even with a time lag.