Jökulsárgljúfur canyon is a part of Vatnajökull National park. This spectacular and amazing canyon created when a volcano erupted underneath the river eight thousand years ago. The name of the canyon literally means „Glacial river canyon“. Jökulsargljúfur is 25km long and 120 meters deep and forms several breathtaking waterfalls – one of them Dettifoss, Europe´s most powerful waterfall.