This really is a magical location. An hour outside Dublin on the north western side of the Wicklow mountains, on the road between the Sally Gap and Bohernabreena.
A few hundred yards downstream, this tributary joins the Liffey. The stream runs below a church, Church of Ireland, in the Norman style, and its siting is no accident.
Taken in late autumn, low sunlight through the trees, I'll be going back there again soon, to try to do it more justice. It's an exercise in seeing, and it's never wasted.
Taken using the Nikkor M 300, it really doesn't cover 7x17, even stopped right down. Perhaps acceptable for a contact print, but cropped to a 7x14 it will handle a good enlargement.