Looks like you caught a reflection off a flying saucer, finally we have hard evidence!
A couple of months ago I was on vacay in Arizona. I was doing an HDR (3 shots in rapid succession). Afterwards I noticed something in the pics. These pics have been blown up to 3:1 so it's pixelated pretty bad. First shot you can see a speck just above the mountain. Second shot you can see it moved closer and more pronounced. Third pic it's gone. I never figured out what it was.
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