What is this?

This week's Saturday Timewatch photo is one in the long-running but very occasional series of puzzle photographs.

 

So what do you think this is?

 

In this instance, I do know the answer, or at least the answer that is given in several different places on the internet. For now, I have deliberately omitted the geotag as it would give quite a big clue. I'll leave this open until Monday to give everyone a chance.......unless of course someone scores a bullseye in the meantime!

 

Over to you.

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Uploaded on December 16, 2023
Taken on December 15, 2023