The spot that appears in the same location looks like a foreign object right ON (or maybe inside?? ack!) the lens. In the last shot, that defect in the upper right-hand corner of the photo, that appears to be a "ghost", which is a circular spot caused by the lens diaphragm. Many lenses will ghost when shot toward the sun, and especially if strong light rays are raking in from across the lens front, the "ghost" image of the diaphragm will be offset in the picture. Many zoom lenses will have multiple ghosts when shot toward really strong sunlight, especially if the field is mostly dark...it's not "flare"...
Remember some of those old 1970's movies, where a long establishing shot would feature the sun, and a zoom lens ghost-fiesta with 5,6,7,8,9, or 10,or more lens elements, each with a cool-looking ghost?