Caught this again, one needs to click and enlarge this image to really get a good see.

Notice the dark Columns just above the trees. I believe this to be a shadow cast buy the rugged mountains of the Clumberland Plateau about thirty miles west of us. Apparently around July 25th everything lines up and we get this shadow that looks like a long columns rising into the evening sky.

At least that is what I think is happening.
cpyrght John Sebastian 2004