Dettifoss is a powerful waterfall located in Vatnajökull National Park in Northeast Iceland. Known as the second most powerful waterfall in Europe, it boasts a width of 100 meters and a drop of 44 meters into the Jökulsárgljúfur canyon. The water, colored greyish white due to sediment runoff, flows from the Vatnajökull glacier, making Dettifoss a must-see natural wonder for visitors exploring the Diamond Circle route in North Iceland.