[The Cajun]

Could be a camera artifact.

Don't see how it could be a camera artifact, holds position on the topography as the camera angle and rover position changes.
A camera artifact would change position on the topography as the rover and camera moved.

Can probably say the same for the sun hitting a *glimmering rock*.
You don't have to move too far watching a mirror reflecting sunlight in the distance for the bright image to change or disappear all together.

Just weird enough for NASA not to investigate further..........Again :)

[dragnet2]

I tend to agree with your position.

Amazing image isn’t it?

[mad_as_he$$]

The real question is why the left camera didn't catch it. They are a few inches apart.