If you go for an hour walk and look around you will see hundreds of things of note. So many that it doesn't even seem possible to comment on them all or reference them in paintings. You look at something, and the image combines with another thought or sentiment running through your head, and the whole mood and meaning of what you are seeing changes. You look at the sky and note a motif....walk 10 paces forward, look again in a slightly different direction and something equally interesting presents itself,...and so it seems that very few things are actually noticed, and very few things are actually painted. There are a million more things to be done with landscape in painting.