Every 30 years...
... the gates on the Bingley Five Rise Locks are replaced and general maintenance done. I visted over two years ago and there was hardly anyone around.
The locks raise a boat almost 60ft in a distance of 320ft, the steepest lock flight on the Network.
Thousands of people have descended on them this weekend for a tour. Including me and H1, and we also met up with Wendles56 and T1(?) for a coffee.
I've not seen Wendles image yet but I opted for B&W even though the light was really nice today. Edit: have now seen Wendles, and she's gone B&W too!