El río Llobregat

The Llobregat originates at an elevation of 1,259 metres (4,131 ft) in the Serra del Cadí, within the limits of Castellar de n'Hug municipality, Berguedà comarca. The total length of the river is over 170 kilometres. The river ends in the Mediterranean Sea forming the Llobregat Delta.
The video shows how river starts from small streams of water and ends as a giant flow.