![A complex system of dunes in Saudi Arabia's Rub’ al Khali sand sea.](https://science.nasa.gov/wp-content/uploads/2023/07/iss069e003278-lrg-jpg.webp?w=4096&format=png)
Linear and Star Dunes
A complex system of dunes displays an array of patterns in the Rub’ al Khali sand sea in southeast Saudi Arabia.
Credits: NASA
TakenApril 13, 2023
Image CreditNASA
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A complex system of dunes displays an array of patterns in the Rub’ al Khali sand sea in southeast Saudi Arabia.