I guessed this was some kind of reflection that had been flipped upside down, I like the effect.
I did something similar with this image earlier in the year.
Flipping a reflected image like this and allowing something to unexpectedly intrude at the top of the picture that shouldn't be there really messes with your head, well it messes with mine at least.
Another of my favourite "what the hell is going on here" images is this one from 2018. No post processing trickery here, just a scene as it appeared in reality with a sky full of inverted trees.
I also like the way the trees in the foreground look like they've been partying all night and a few of them have had more than enough.