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Dettifoss
Dettifoss is the most powerful waterfall in Europe, with a water flow of 6,186 cfs (193 cms). The waterfall is created by the Jökulsá á Fjöllum river, where it spreads out 328 ft (100 m) and plummets 148 ft (45 m) into the Jökulsárgljúfur canyon. You can find two more impressive waterfalls within the canyon, Selfoss and Hafragilsfoss.