sand dune

US /sænd duːn/
UK /sænd duːn/
"sand dune" picture
1.

duna de areia, duna

a mound or ridge of sand heaped up by the wind, found in deserts or on the coast

:
The desert landscape was dominated by towering sand dunes.
A paisagem desértica era dominada por imponentes dunas de areia.
Children love to play and roll down the sand dunes at the beach.
As crianças adoram brincar e rolar pelas dunas de areia na praia.