Successful landscape photographs often require the eye to journey through the image, happening upon points of interest along the way or culminating on one main element in a route pre-determined by the canny photographer.
One of the simplest, most effective methods of achieving this is to include naturally occurring, or even manmade, leading lines within your picture. They are perhaps the most powerful aid in your compositional repertoire, and add incredible scope to inject impact and dynamism into your pictures. Some are more obvious than others ...
Read this article, and many more, in High Definition, inside Issue 35 of Landscape Photography Magazine.