Great Sand Dunes
That's a lot of sand!
The dune rises more than 700 feet (215 meters) above the valley floor.
A shallow stream provides fun for people of all ages.
It is a 1-mile walk to the top of the dune. But many people only go part way up to slide down.
The wind makes ever-changing patterns in the sand.
The wind is powerful!
The building blocks of the dunes -- grains of sand.
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