Is one of Iceland’s most iconic and beloved waterfalls, found in the Hvítá river canyon in Southwest Iceland. Gullfoss is two separate waterfalls; the upper one has a drop of 11 meters and the lower one 21 meters. The rock of the river bed was formed during an interglacial period. Water flows over Gullfoss at an average rate of 109 cubic meters per second. The heaviest floods have recorded a flow of 2000 cubic meters per second. During the summer, the flow is 130 cubic meters per second, which would take only 3 seconds to fill this building. People were eager to exploit the power potential of Gullfoss, and many plans for hydroelectric developments on the river Hvítá have been proposed.