The biggest sand dune in the eastern United States lies on the Outer Banks of North Carolina and hosts more than a million visitors a year.
Producer, Serena Ajbani; associate producer, Dhruv Tikekar; scriptwriter, Taylor Nawrocki; videographer/editor, Alan Brown, additional videography, Alasdair Wilkins; graphic artist, Heather Dollar; executive producer, Dr. Tom Linden.