While we were exploring the cindercone at Newberry Volcanic National Monument, I was only a bit interested in this vapor trail as a plane approached from the north. Lovely view, but the vapor trail was not all that unusual. In fact, I didn't even compose the picture to feature it--just a "Here it comes".
When I turned toward the south after a moment and saw the "There it goes." I found that puzzle I mentioned. I do not have an explanation for the dark line that is ahead of the trail. Do you?
It could have been an Odd Shot. But I cut back a while back on participating in some of the memes, and suspended the Odd Shots on Monday again. Things are settling down into a routine again, and I may be back with Skywatch and/or Weekend Reflections more regularly.
But does anyone have an answer to my Skywatch puzzle?