Morsárfoss (Icelandic pronunciation: [ˈmɔr̥sˌaurˌfɔsː] ) is a waterfall in Vatnajökull National Park, Iceland. Measurements showed that one of the several waterfalls in the area is at least 240 metres (790 ft) in total height, making it the tallest waterfall in Iceland. Morsárfoss became visible in 2007 when Morsárjökull, an outlet glacier of Vatnajökull glacier, started melting.