Location: 790 km southwest of Ulaanbaatar in the Sevrei soum of Umnugovi province.
Features: The Khongor sand dunes lie from northwest to southeast. The dunes are 27 km at its widest covering 965 square km in total reaching 200 meters (650 feet) in height. While the southern part of the dunes are rocky and mountainous, the central part is barren with no plants and northern part has several oasis. The contrast is amazing. On a windy day, the sand will rise up in a storm and you won’t see anything around you, but on a calm and sunny day it glows magnificently in the sun. It’s truly one of Mother Nature’s wondrous creations. The widest section of the Khongor is nicknamed the singing dunes, because when you climb them (which is a challenging hike), the sand will squeak under your feet making a singing-like noise. If you lie down in this part of the dunes, you will hear the sound close to that of a plane that is the sound of hot sand scrolling in the wind.