Thanks for the comments guys.
Terry, I'm not really trying to 'say' anything with the images, just playing around with contrasting textures & colour. I haven't done any serious ( i.e. camera on a tripod ) stuff for a couple of years & am trying to feel my way into a new project. I felt sort of inspired walking around Ingleton last week.
Actually, while I was typing the above my other half walked in & we started talking about the images: We decided that they had some interest in the way that they were flat ( little or no perspective ) but layered - a surface of bubbles & ripples over a layer of stones & pebbles with deeper dark amber water behind them. I'm interested in the way the images are pictorial but flattened part of the way to abstraction.
When I was a student I was interested in this kind of stuff:
http://www.metmuseum.org/art/collection/search/449537Flat but layered.