Never been to The Great Sand Dunes National Park in Colorado, I wasn't really prepared for how massive these dunes are. Looking at photos online, It's difficult to get a feeling of scale, or size, of The Great Sand Dunes. The best way to display scale in a photograph, regardless of your perspective, is to add something to the scene that the brain can reference to find scale.
Usually, I don't like people in my landscapes. I would prefer a wild animal, or a bird, but because this is a pretty busy spot I left all the sand explorers in the shot so the viewer can really get a sense of scale.