What a shame. I still really like the image from September's background! But, a new month means a new background. In the same vein as September, October's image is also a multiple exposure. Also done in-camera, this is a series of the clouds in Flagstaff, AZ on a particularly gorgeous day. I believe it was three overlapping images... but it may have been five.
First, the version I'm using with the October calendar.
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Second, the image without the calendar.
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Both are plenty big for background use, so click, right click and enjoy!