Hraunfossar Waterfall (Lava Falls) is a unique collection of countless rivulets cascading from a giant lava field (Hallmundarhraun) into the Hvita River over a distance of about 900 meters. This lava field flowed from the eruption of one of the volcanoes beneath the Langjokull Glacier. September visits are enhanced by the autumn colors of the moss and foliage. Several viewpoints along the shoreline offer incredible perspectives.