Selfoss is a waterfall to visit together with Dettifoss. With its 11 meters height and over 340 meters width, this horseshoe-like waterfall is much wider than it is tall. It. You can reach Selfoss by walking 1 kilometer south of the mighty Dettifoss. For Dettifoss we recommend the west side, but for Selfoss we prefered the east side because it’s hard to see the whole waterfall and it’s form on the west side. Don’t confuse Selfoss waterfall with Selfoss town in South-Iceland.