Kerid is a striking volcanic crater lake on the Golden Circle route, filled with milky blue-green water amid stark black and deep red slopes. Once believed to be an explosion crater formed 3,000 years ago, geologists now believe it to be a collapsed magma chamber at the end of a volcanic eruption that occurred more than 6,000 years ago. Kerid is the northernmost one of the crater row called Tjarnarholar and the colourful crater is one of the several crater lakes in what is known as Iceland’s Western Volcanic Zone. This Zone includes Reykjanes peninsula and Langjokull glacier.

Kerid is 55 meters (180 ft.) deep including the still water on the bottom. Beneath a certain level, cavities and fissures in the rock are filled with groundwater, the surface of which is called the water table. The current pool of water at the bottom of the crater is at the same level as the water table and is not caused by rainfall. There is a path lining the rim for visitors to walk around and view the red and black slopes contrasting with the striking aquamarine water contributing to the otherworldly landscape.

The crater is located 15 km north of Selfoss, right off highway 35. A car park is located directly next to the crater.


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