The Siwalik Region

                It is called “Churay Range” in the east and central Nepal , and in the west,”Someshore Range”. It is also a sort  of  debris of Mahabharat range carried by the rivers in the past and deposited in the form of small hills lying in between the Mahabharat and Bhabar zones. The average height of these hills is about 1000 meters in the east and central part, and in the west it exceeds even 1500 meters above the sea level. It comprises almost dry hills , consisting of mainly big  boulders, gravels and  conglomerates with sandy clay loam, loamy sand and sandy soil. These hills are found a bit scattered in some places, forming valleys with Mahabharat range, such as Rapti Dun, Dang, Deokhuri  and Durkhet valleys, which are situated in between the Mahabharat range and the Siwalik range. But in some places it seems to have  vanished with no apparent shape seen outwardly. It remains in the form of fringes of the Mhabharat itself . In some places, specially to the east of Kali Gandaki river and to  the south of the Deukhuri valley, the arms of the Siwaliks extended up to the border of Nepal and India. Because of the great6 porosity in the soil, there is always scarcity of water, and due to that the soil is less fertile, which discourages the cultivation and encourages the forest production, but the trees in the forest of this range are not of high quality.