u/leafboards

I went on a trip to Salt Lake City, Utah back in 2017. My aunt had taken this picture of this lake with a pretty mountain background with her professional camera. After we got back we looked at the pictures we took and this is what we saw in one of them. Could totally be a "trick of the lens" type of thing, but after extensive research, I have not found anything close to this happening from a glare of the sun or lens flare from a camera. Please enlighten me on what this could potentially be. Thanks!