Canal cave is a lovely cave not! Although the first half is basically all walking it's walking in quick mud, forcing you to traverse most of it. A climb up gains passage beyond a waterfall to a crawl that after a small chamber gets very dismal. I pushed form some distance as shelves of mud/shale broke before me. I may have entered new ground. The passage continued extremely tight and desperate Nidd resurgences was a quick hour of a trip to wash off, there is quite a bit of cave to explore here, they are a bit like Mossdale. Met John Voalthan at the entrance as he planned to dive it later.