   |
|||
| Sand Dunes | |||
|
Sand dunes are piles of sand blown into hill shapes by the wind. Deserts have many sand dunes. |
|||
 |
|||
|
|
|||
| Sand Dunes | |||
|
Sand dunes are piles of sand blown into hill shapes by the wind. Deserts have many sand dunes. |
|||
|
|
|||