Kerið is a striking volcanic crater lake located in the Grímsnes area of South Iceland, along the popular Golden Circle route. Estimated to be around 3,000 years old, this relatively young volcanic caldera stands out for its vivid red volcanic rock slopes that contrast vividly with the bright aquamarine water filling the basin.
The crater is approximately 170 meters (560 feet) wide, 270 meters (885 feet) long, and around 55 meters (180 feet) deep, with the lake inside reaching depths between 7 and 14 meters (23 to 46 feet), depending on seasonal water levels.
Unlike many other volcanic craters formed by explosive eruptions, Kerið was created when a magma chamber emptied and the land above collapsed, forming the unique bowl shape seen today. The oxidized iron in the rocks gives the crater its distinctive red color, setting it apart from the darker volcanic formations in the region. Visitors can walk the rim on a short, easy loop trail or descend to the lake to enjoy the vivid colors and tranquil surroundings, making it a favorite stop for travelers on the Golden Circle.
Good to know
Scenic beauty
Kerið offers a unique and colorful landscape with its striking red slopes contrasted against the deep blue-green crater lake. The vibrant colors change with the seasons, from vivid summer tones to snow-dusted winters, providing excellent photographic opportunities.
Accessibility
Kerið is very easy to access, located just off the Golden Circle route near Selfoss. The site features well-maintained paths and stairs for walking around the crater rim and down to the lake, suitable for visitors of most ages and abilities.
Cost
There is a small entrance fee of around 600 ISK (about 5 EUR/USD) as of 2025, which contributes to the upkeep and conservation of the site.
Crowd level
Kerið attracts many visitors throughout the year due to its popularity on the Golden Circle tour. However, it is generally a bit less crowded than the main Golden Circle highlights.