The 100 m image of 1 July 2016 shows us part of River Ob, also Obi, a major river in western Siberia, Russia. Ob river is one of the largest rivers of not only Russia, but all over the world. It flows from the South to the North of Western Siberia is almost parallel to the great Russian river Yenisei. In the place of confluence there is a huge Gulf. It is called Obskaya Guba and length greater than 800 km Is a kind of a mouth of the river, bearing in scientific circles, the name of the estuary. It is characterized by the absence of river sediments. Their creation hinder sea currents. The length of the river Ob equal 3650 km.