Dettifoss in Vatnajökull National Park is said to be the second most powerful waterfall in Europe after the Rhine Falls. The Dettifoss falls of the Jökulsá á Fjöllum river are 100 meters (330 feet) wide and have a drop of 44 meters (144 feet) down to the canyon Jökulsárgljúfur. It is the second largest waterfall in Iceland in terms of volume discharge, behind the Urriðafoss.
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