Meerfelder Maar

It was formed by a huge underground phreatomagmatic explosion that happened when hot magma rose and struck a water-laden layer of rock.

The highest part of the crater rim lies at a height of 515 m above NHN, where there is an observation tower, the Landesblick ("countryside view").

[2] From 1877 to 1880 the water level of the lake was artificially lowered in order to create meadows and pasture land.

The cost of 12,000 gold marks was paid by the state and the province, which is why the municipality Meerfeld erected a commemorative monument in 1890.

Until 1984 the water was very dark during the summer months and had a yellow and brown colouration that was due to blue algae.