The Khongor's sand dune is one of the Mongolian longest sand dunes and continues 80 kilometers from northwest into southeastern in Sevrei and Bayandalai soums of Omnogobi province. Zuunsaikhan, Dundsaikhan, Baruunsaikhan, Bayandalai, Zoolon, Sevrei and Nemegt of the Gobi-Altai mountain grows the special flower and plants. Southern cool plants and Central Asian dry plants are found in this mountains range.
The area is rich in Fauna. There are mountain sheep, goats, leopards, black-tailed marten of cliffs, lynx, wildcats, squirrels, white gazelles and other mammal animals.
Khongor Sand Dunes: are the largest and most spectacular sand dunes situated in Sevrei soum. Also known as the "singing dunes", they are up to 300 m high, 12 km wide and about 80 km long. The spectacular dunes are bordered by lush green vegetation supported by a small river Khongor, which is fed by underground sources from surrounding mountains.
There are many findings of archeology, remains of ancient city, monasteries, wreck, graves, burial-mound, cave paintings, petroglyphs, and stone figures.