A sand dune is a hill of sand that was built up by an obstacle such as a rock and had sand blowing over it in one direction for a period of time. Over that period of time it builds up and gets gigantic and then sometimes collapses. People often visit these amazing sites.
A sand dune is a sandy mountain in a desert or at a beach along the shore of an ocean.
the top of a sand dune is called the crest of the dune.
A hill of sand in a desert is normally referred to as a dune
A sand dune is a landform, not a climate.
A sand dune is the deposition of windblown sand.
A sand dune is a pile of wind-blown sand.
A sand dune that got blown away
A sand dune is a Constructive force.
A Sand Dune, more specifically a "Seif Dune" or a "Barchan Dune".
small hill of sand caused by the action of wind
It is a sand dune that is formed at right-angle to the prevailing wind.
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