If you're in the vicinity of Great Sand Dunes Park, don't just think, "Sand dunes. Boring." That's what I did the first few times. After all, I've been to Arabia! Once again my daughter saved me from my ego when she insisted. It is a great place! At Great Sand Dunes, a persistent wind has piles sand up against the mountains. The effect is incredibly scenic, and an amazing ecology. Also, a very hard place to take flower pictures. Closeups in wind are almost impossible. The best strategy may be to take more distant shots with as many pixels as possible, then crop the results. That's what I did with veiny dock. Erecting wind barriers is time consuming, unwieldy, and not entirely effective.