Artifacts problem - feedback greatly appreciated

[khilts]

Hello all,

First-time poster - thanks in advance for sharing any comments you may have.  I'm always eager to improve my artistic and stock photography efforts.

The image shown below (resized to 50% to meet attachment limits) was rejected for "artifacts problem".  Can anyone provide more specific feedback for me?

[Szalam]

I don't see any artifacts at the scale you've uploaded here. Perhaps it was a mistake.

The color at the top seems a little odd. Like a bad gradation filter or something on the mesa.

You could try resubmitting.

[khilts]

Thanks for the feedback!

[khilts]

Follow up post - I did change the image by dialing back vibrance and sharpening very slightly; resubmitted and it was accepted.

[Szalam]

Thanks for following up!