Mouth of the Markarfljót River, Myrdalsjökull region, Iceland.
Fed by the Myrdalsjökull, a 308-square-mile (800-square-kilometer) dome of ice in the southwest of the island, the Markarﬂjót River ﬂows round the northern edge of the small Eyjafjallajökull Glacier, tracing a hesitant course over a broad bed of basaltic sediments before ending its journey on a beach of black sand on the Atlantic shore. Like all glacial rivers, the Markarﬂjót spreads out over a plain from which glaciers have receded, forming a dense, intricate network of channels. Its course changes constantly, and its ﬂow reaches a peak in July and August, when the ice melts.
From Yann Arthus Bertrand