Magnificent Dettifoss Waterfall on a full-day private tour from Lake Myvatn

Dettifoss is a waterfall in Vatnajökull National Park in Northeast Iceland and is reputed to be the second most powerful waterfall in Europe after the Rhine Falls. Dettifoss 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 sediment-rich runoff colours the water a greyish white. The falls are 100 metres wide and have a drop of 44 metres down to the Jökulsárgljúfur canyon. It is the second-largest waterfall in Iceland in terms of volume discharge (behind the Urriðafoss), having an average water flow of 193 m³/s. The superlative of "most powerful" comes from its water flow times its fall distance. The water of the wide Jökulsá á Fjöllum river falls for more than 44 metres.

Mývatn is a shallow lake situated in an area of active volcanism in the north of Iceland, not far from Krafla volcano. It has a high amount of biological activity. The lake and the surrounding wetlands provide a habitat for a number of waterbirds, especially ducks. The lake was created by a large basaltic lava eruption 2300 years ago, and the surrounding landscape is dominated by volcanic landforms, including lava pillars and rootless vents (pseudocraters). The effluent river Laxá is known for its rich fishing for brown trout and Atlantic salmon.

Selfoss is a waterfall on the river Jökulsá á Fjöllum in the north of Iceland. The river drops over a number of waterfalls over about 30 km before flowing into Öxarfjörður, a bay of the Arctic Sea. The river originates as meltwater from the glacier Vatnajökull and therefore the water flow varies depending on the season, the weather and volcanic activity. A few hundred meters downstream of the Selfoss waterfall (11 metres high), the Dettifoss waterfall is situated, the most powerful waterfall in Europe. The river falls 44 metres over a width of 100 metres. Below the falls, the river passes through a gorge which is part of the Jökulsárgljúfur National Park.

Vatnajökull National Park is one of three national parks in Iceland. It encompasses all of Vatnajökull glacier and extensive surrounding areas. These include the national parks previously existing at Skaftafell in the southwest and Jökulsárgljúfur in the north. The unique qualities of Vatnajökull National Park are primarily its great variety of landscape features, created by the combined forces of rivers, glacial ice, and volcanic and geothermal activity. On 5 July 2019, Vatnajökull National Park was inscribed as a World Heritage Site.