We could also take the simplification to an extreme, as here. This version captures only the most basic shape of the mountain range, emphasizing the top because it is the only place that the line makes an abrupt change of direction. The viewer's eye is also taken to the top more quickly - like driving on straighter roads, your eye can travel along a line more quickly when there are fewer twists and turns.

These simple diagrams are examples of some of the extremes you could take the original line to; of course, subtle combinations of these different methods will probably be what you will use when painting.