It wasn't
just for fun, but it was fun doing it. Here are a couple stages along the way. The bottom one is what was at the bottom of the layer stack, the tone-mapped HDR. The upper one is how it looked just before the Twirl filter. Besides what happened in processing to that point, you can get a good idea of the before and after related to the Content Aware fill. Very nice looking rocks. Thanks for sharing these two steps.
I wanted that light area to be in the upper left, but just rotating it 90 degrees clockwise would've left those two small cradled stones (as Cheryl so nicely put it) in a very tenuous position. I tried a couple different twirl amounts and directions before settling on the combination I finally used.