Explanation:

Belan river is a river in Indian state of Uttar Pradesh.it Originates from Western part of Sonbhadra district Uttar Pradesh.It is famous for prehistoric sites on its banks.It originates from western part of Sonbhadra district then flows in southern part of Mirzapur and Prayagraj districts.It is famous for prehistoric sites, which is related with Neolithic, periods. Chopanimando is for pottery making and Koldihwa for cereals like rice. (both in Prayagraj district) are two important excavated sites, located on the northern fringes of Vindhyas on the banks of the Belan river.