Posted by Sheridan Williams at 16:25 on 2013 Sep 10
Has anyone any idea what this faint vertical shadow is?It was taken at sunset in Pembrokeshire on 10 September 2013. 
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Sky pillar
Tue, 2013-09-10 16:25
#1
Sky pillar
Posted by Len Entwisle at 21:59 on 2013 Sep 10
Hi Sheridan , Though your picture is not visible in your query you may well find out what it is via this website Atmospheric Optics At a guess (unseen) I would think related to a crepuscular ray.Hope you can upload the image.
Posted by Sheridan Williams at 18:50 on 2013 Sep 21
Sorry to be dense, but I can't see how to upload the image.