Grjotagja
Grjótagjá
Grjotagja is a small lava cave located near Lake Myvatn in northern Iceland. The cave contains a geothermal hot spring with water temperatures ranging from 39 to 43 degrees Celsius. Historically, it was a popular bathing spot, particularly during the 18th century.
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Grjotagja was formed by volcanic activity and features unique geological formations. In the 1970s, volcanic eruptions increased the water temperature, making it unsuitable for bathing for many years. Visitors can access the cave easily from the nearby Ring Road. Today, while bathing is discouraged, it remains a site of interest for its geothermal properties and cinematic appearances, such as in the popular series filmed in the area.