[tvoelcker]

Sorry, yes you are correct RoyL for I said composition rules rather than composition aides.
Main one being the subject is located in the middle of the frame. However, as I said, I think this worked well in this image.
Also I agree there is a nice bit of symmetry although there is a hint of perhaps another mountain to the left.
It's a great shot and please forgive my poor choice of words in my first critique..