1. 
   Dettifoss
   Dettifoss is a waterfall in Vatnajökull National Park in Northeast Iceland, and is reputed to be the most powerful waterfall in Europe. It is situated on the Jökulsá á Fjöllum river, which flows from the Vatnajökull glacier and collects water from a large area in Northeast Iceland. The falls ...
   Found op http://en.wikipedia.org/wiki/Dettifoss
   
   
2. 
   Dettifoss
   Dettifoss (de'tifôs) , waterfall, in the Jökulsá á Fjöllum River, NE Iceland. Iceland's most impressive fall, it drops 144 ft (44 m) into a long canyon.
   Found op http://www.infoplease.com/ce6/world/A0815316.html
   
   

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