Ah, yes.
On 8Apr1978, we took Guillemot from Rugby -> Hillmorton -> Braunston Turn -> Napton -> Calcutt ...
On 8Apr2024, I did a posting of the Hillmorton picture (fifth post on Tonic page 567), ...
... and while waiting the hour required to do a separate post, started preparing a new post with the Calcutt picture, and pressed the Submit button just before going out for lunch, without competing the description of where the picture was from. The system therefore merged the Calcutt picture with the Hillmorton one...
While at (a long-) lunch, there were some contributions about where the extra picture was, as it's a wide lock with GU paddles, and correctly identified Calcutt. I edited-in the subsequent posts to the earlier picture, confirming the location... The link therefore has the debate and the Calcutt picture at the end ...
To add to the fun, when I now press the link, the system takes me to Tonic page 568, even though posting number 3045292 is to be found on page 567. Might be this issue in Technical Support ... _sigh_ Computers. ...