Brilliant video! Last year I was amazed to see a trout parr in the tiny bit of stream above the last pitch of Diccan Pot. It must have had quite a fall to reach there, I hope it managed to find its way through to the Ribble. I find it fascinating that these upland streams above caves have trout populations in them - Whit-a-Green, Penyghent, Fell Beck - how and when did they get there? It would be interesting do see how genetically distinct they are from their nearest neighbours.