The Khongoryn Els is located in the territory of Servei village of South Gobi province. This is largest and most spectacular sand dunes in Mongolia. Also known as the Singing dunes – from the sound they make when the sand is moved by the wind or as it collapses in small avalanches. There are up to 400m high, 20km wide and 120km long and says one of the largest dunes in the country. It gives rare opportunity to someone who likes adventurous climbing. It takes one hour to get to the top but every step forward is followed by a significant backslide, but panoramic view on top is amazing wonderful. Best place for camel riding alone side of green oasis and dunes.