Many compositions can work in both landscape and portrait formats. When I posted the previous version elsewhere, one person found the swirl a little too overwhelming as a part of the composition although I was presenting it as the composition. But…I did turn the camera for a vertical composition.
In the horizontal version, I was trying to eliminate the bright woods as well as emphasize the swirlpool. In this version, I added the full balanced rock as well as some foreground elements which makes the swirl more a part of the whole rather than the entire. Which do you prefer? Here’s a quick link to the other for comparison.