Have you ever photographed a deep forest, a huge lake or an enormous mountain range and when you looked at your images later they just didn’t seem as “big” as you remember? This happens a lot in landscape photography since the camera itself has no way to record a sense of scale. Its up to you as the photographer to create this sense of scale, which is why many professionals prefer to shoot landscape and travel images that include people.
Take the image below for example. This field of wildflowers covered several acres of land and stretched almost as far as the eye could see. Without the people in the image, the sense of scale would have been lost.