Mývatn is a volcanic lake in northern Iceland. The name of the lake (Icelandic mý ("midge") and vatn ("lake"); the lake of midges) comes from the huge numbers of midges to be found there in the summer.
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 Steam rising in the background is from Natural Geo-Thermal vents. which gives the whole area an otherworldly feeling.