Skjálfandafljót

Skjálfandafljót is 178 kilometres (111 mi) long, and is the fourth longest river of Iceland.

[1] It has its source at the northwestern border of the icecap Vatnajökull on the Highlands of Iceland.

From there it streams parallel to the Sprengisandur Highland road in a northern direction, flowing finally into Skjálfandi bay.

Other well-known waterfalls in Skjálfandafljót include Hrafnabjargafoss, Aldeyjarfoss, Barnafoss and Ullarfoss.

[2] At the north end of the Sprengisandur road, the river drops down 10m over Aldeyjarfoss.