These sands are 80 km long and have quite a lot of plants. Its north part Is made up of hillocks with small hollows. Movement In the sand is not seen here due to the thick plants. The west part of the sands is on clay deposit white the central and east parts are on granite surface. The granite surface is a guarantee that the sand is not older than the volcanoes of Dariganga. There are some bushy and woody plants like elm, wicker, star anise and beach grass, and also some animals like mouse, marmot, souslik, fox, mask deer, rabbit and Wolf Mongolian gazelle.
Ganga Lake is 12 km south of Dariganga soum centre. It has been created by the movement of the sand and covers a 2.2 sq.km area. It is 2.1 km long and 1.6 km wide and is fed by a spring at the shore of the lake. The most interesting is that it feeds into the lake faster when someone sings close to it.
The lake is located on me path of migratory birds and is the only swampy place which attracts birds around that area. During October to November many swans, cranes, and shelduck gather around Ganga Lake. This gathering is called the Swans gathering. This lake has been protected since 1993 as a site of natural importance and Moltsog els and Altan ovoo were added to the protected area when it became a National Park. A statue of the famous man Toroi band is in the centre of Gangiin Tsagaan ovoo extinct volcano which is 6km from Gang Lake. Ganga lake and its nearest group of lakes become the pleasant homes for many speeres of migrating birds in October and such as whooper swan , shelduck, swan goose, suberian crane and others. You can see thousands of swan in the Ganga lake in wich is called Swan gathering by locals. The place was first protected as Memorable place in 1993 and has been protected as National park with 62860 ha areas according to decree number 22 of State Great Khural since 2004.