Thanks to all the good sports who left a guess as to what this is a picture of. Before I go to bed, I want to leave a link to the visual answer, since it's easier to show than to explain what it is. The curious can find the answer here: http://smu.gs/16OGKr7.
Thanks, too, to all who simply expressed appreciation of the image without venturing an opinion on what it is. I'm not sure I'd have known if I hadn't taken the picture myself.
DP227-2013 Posted August 15; processed ditto.
Hallelujah! The link below is now unnecessary. What a pleasant surprise to check my computer after being away from it all day and find the 'Popular Photos' world spinning once again on its proper axis.
Find recent posts to DailyPhotos community galleries here: http://www.smugmug.com/community/DailyPhotos