Conversation so far:
where are the great sand dunes of colorado located
The Great Sand Dunes in the San Luis valley, are on the eastern edge of a valley in central Rocky Mountains. To the east are the Sangre de Cristo mountains.
What is the height of the Great Sand Dunes
The Sand Dunes rise 750 feet above the San Luis valley, the tallest sand dunes in North America.

Question: What else is in the area
Self-contained rewrite: What else is in the area of the Great Sand Dunes