I spent 3 days recently in the Sand Dunes in Great Sand Dunes National Park in Mosaca, Colorado.  We had pretty great weather (although not amazing shooting conditions).  The second night was by far the best weather. It had been very overcast most of the day and we struggled to find much light.  Our morning shoot featured peaks that were covered by clouds but we knew that the opportunity for a good sunset was there.  Several of us checked our TPE App (The Photographer's Ephemeris) with Skyfire and knew the possibilities were good for the sunset.  I guess the app was right because we caught a few minutes where the sun light the dunes and the peaks ever so much leading to some awesome color.  More to come.

For whatever reason the landscape reminded me of the line from "For All The Saints": From Earth's Wide Bounds, From oceans farthest coast, through gates of pearl streams....you get the idea.

"From Earth's Wide Bounds"