Are we going to die out there?
Remove yourself from harm’s way! Who is on the other side of the river, Chris Hemsworth? Why don’t you check out the movies? It’s a mind-boggling optical illusion, to put it mildly. No, I don’t think it’s the sun.
Clearly, this person had his camera ready at the proper time. Now, we’re all free to conjecture as to what’s happening. It’s a fascinating mystery, after all!