i know its not a plant or animal etc but i know it wasn't an aircraft it stretched north for about five miles in Aberdeenshire
No identification made yet.
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it seems too regular to be biological in origin, but you'd expect a contrail to be lighter.
Just a thought, but have a look at -
You might something that matches, and you could even send it to them for comments.
If you do, please post their reply!
could be the shadow from a contrail on lower thin cloud
Thanks for the help, I'll send the picture into the Cloud appreciation society to see what they say.
Lat/Lng: 57.4, -2.5
OS grid ref: NJ700345