A dune.
SAND
Simpson Desert.
there are mountains sand dunes rocks and sand in arabian desert
A "pile" is not a mathematically validated standard measure of volume.remove all till 1 and it will no longer be a pile.a pile of books contains 2 or more books
Sand, sand, and desert sand
Sand Dune
dune
a pile of sand
A single 'piece' of sand is called a 'grain'.
It got its name from the yellow particles in its sand, originating from the Yellow River.
A hill of sand in a desert is normally referred to as a dune
The Arabian Desert is the largest sand desert.