Tungnaá
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The Tungnaá is a river in the southern highlands of Iceland. It flows from the western edge of Vatnajökull to the reservoir Sultartangalón, where it joins the Þjórsá.[1] The river has been used extensively for hydroelectricity, with power stations at Vatnsfell[2], Sigalda[3], Hrauneyjafoss[4], and Sultartangi[5].