![](http://www.alamy.com/thumbs/6/DB70C39B-DEB3-4E89-B293-1806D9DEECD9/ARFGPW.jpg)
Khongoryn Els sand dune. South Gobi desert. Mongolia
This is one of the biggest areas of sand in Mongolia (over 900 square kilometers). They have width of 20 km and length of 100 km. They surrounded by mountain ranges. The sand originated in ancient lakes and rivers. The dunes change their color at different hours of the day from yellow to silver. In a windy day the dunes make sound so the local people call them “singing dunes”.
Size: 8355px × 8355px
Location: Gobi Gurvansaikhan national park Khongoriin els sand dune Omnogobi aimag Sevrei soum Mongolia
Photo credit: © Pavel Filatov / Alamy / Afripics
License: Licensed
Model Released: No
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