The sand dune eroded during the storm.
We had a picnic on the dune above the beach.
Look at that big sand dune over yonder.
The sand dune became a sand monster because of a continuous wind raping across the desert.
The wind carried more sand into the sand dune.
Cerro Blanco it is the largest sand dune in the world but Cerro means "mountain" so i would say that you should use The Great Dune Of Phyla which is the tallest dune in Europe.
Dune - Dune album - was created in 1995.
A desert dune is a dune formed in a desert
The secondary dune is the sand dune behind the primary dune.
crescentic dune linear dune star dune dome dune parabolic dune
the top of a sand dune is called the crest of the dune.
This is a dune formed from salt.
A dune will disintegrate.
A dune beginning to exist or appear.