Kerith or Kerid is a volcanic crater lake located in the Gra­msnes area in south Iceland, along the Golden Circle. It is one of several crater lakes in the area, known as Iceland`s Western Volcanic Zone the one that has the most visually recognizable caldera still intact. The caldera, like the other volcanic rock in the area, is composed of a red rather than black volcanic rock. caldera is one of the three most recognizable volcanic craters because at approximately 3,000 years old, it is only half the age of most of the surrounding volcanic features. Kerid was a cone volcano which erupted and emptied its magma reserve. Once the magma was depleted, the weight of the cone collapsed into the empty magma chamber. 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. While most of the crater is steep-walled with little vegetation, one wall is sloped more gently and blanketed with a deep moss, and can be descended fairly easily. The lake itself is fairly shallow 7–14 meters, depending on rainfall and other factors, but due to minerals from the soil, is an opaque and strikingly vivid aquamarine. Iceland, Europe

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