I like it, and thanks for attaching some shots of mine. Your guidelines might cover this already, but how would you feel about shots of Lake Superior? It's not a mountain lake, though there are some small mountains around it, but it is natural, is measured in miles, and is glacially carved.
Lake Superior would be great. We see lots of mountain lake shots all over SP, but large expansive lakes are wonderful features whether thay are within mountains or not. I enjoy seeing them and thought others might like to see a collection as well. Notice there are already a couple Lake Superior pics and one of Lake Michigan. I'll probably add some Superior pics of my own when I get time to find them.
Okay-- I added 4 shots of Superior.