Kerið is a striking volcanic crater lake located in the Grímsnes area of southern Iceland, along the popular Golden Circle route. The crater, approximately 3,000 years old, is one of several volcanic features in the area but stands out due to its vibrant, almost surreal colours. The caldera is 55 metres deep, 170 metres wide, and 270 metres across, with steep, red volcanic rock walls that contrast beautifully with the vivid blue-green water at its base. Unlike many other volcanic craters, Kerið is believed to have formed when a magma chamber emptied and collapsed rather than from an explosive eruption.
Visitors can walk around the rim of the crater for panoramic views of the surrounding landscape or descend a path to the edge of the lake for a closer look. The unique combination of colours, especially in contrast with the surrounding Icelandic scenery, makes Kerið a favourite among photographers and nature lovers alike. The site is easily accessible and offers a fascinating glimpse into Iceland’s volcanic past, making it a worthwhile stop on any journey through the region.