Nátthagafoss is a small waterfall/rapid in the south/center of Iceland. The river Tungufljót cascades down over 4 meters.
Nátthagafoss is near Gullfoss, about 2,5 km to the west. There is a 4WD road from road 35 heading to the riverTungufljót. Keep on left and drive to the end of the road. From there it is 1,5 kilometer down river to Nátthagafoss.