So, returning to the subject of the Middle Levels, it's fair to say they have a character all of their own. They are generally narrower than the main rivers and often fairly shallow but they are attractive in their own right. The fact that they are also 'sealed in' by manned lock chambers and your name and boat number are taken to control numbers, and you are given a time slot to enter and leave the system gives them a sort of 'inner sanctum' feel.
Here I'll try uplifting some general shots of the system. First Denver Sluice.
Guess what? Blogger has decided that there's no more photos today. I must have used up my daily quota. I'll try again tomorrow - or maybe next week.