Ken, I really like this. The tonal range is beautiful, details well captured and the trunk on the leading elephant is priceless. Surrounding grasses have retained detail and form. I'd possible consider cropping a little off the right. Not to put down any of your previous photos from the Hwange trip, but this is definitely my favourite.
Thanks for all of the comments, I agree that perhaps a litle from the RHS would be better.
Hwange is to my mind the best place to get interesting Elephant images, the major problem is keeping an eye on all that is happening, a nice problem to have:)