Kerið is a stunning volcanic crater lake located in the Grímsnes area of South Iceland. It is about 3,000 years old, making it one of the younger craters in Iceland's volcanic landscape. The crater is approximately 55 meters deep, 170 meters wide, and 270 meters across. What makes Kerið unique is its vivid colors. The water in the lake has a brilliant blue-green hue, contrasting beautifully with the red and black volcanic rock walls surrounding it. This striking color combination creates a breathtaking natural scene that draws many visitors each year. The crater was formed when a volcano erupted and then collapsed into an empty magma chamber. Unlike many other volcanic craters, Kerið still holds water, giving it a serene and picturesque appearance. The water level varies with rainfall but generally remains consistent due to groundwater seeping through the porous rock. Visitors can easily walk around the rim of the crater for panoramic views or take a path down to the water's edge for a closer look. The area is easily accessible by road and offers a unique glimpse into Iceland's geological past without requiring extensive hiking or climbing.
Nice place to visit if you're in the area or passing by but I wouldn't suggest going out of your way to visit unless you're into these kinds of things. Kerid Crater is a very small caldera and you're able to walk around the edge as well as down to the side of the lake. I visited in late March 2025, it wasn't busy and it only cost a few € for entry.
Very cool, the red rock contrasting with the green water was truly a sight to see. Took us less than 1hr total and due to the free parking and low cost entry (600isk) it was definitely worth the stop.
This is the only crater of all the ones I visited in Iceland that they charge to visit: 4 euros You can walk around the top and then down to the lagoon. The place is beautiful and with an incredible contrast of colors.
Kerið is a volcanic crater lake located in the Grímsnes area of South Iceland. It is part of a group of volcanic hills known as Tjarnarhólar and is characterized by its vivid, aquamarine water surrounded by steep, red volcanic rock slopes.
Kerið was formed approximately 3,000 years ago during a volcanic eruption that caused the cone to collapse into an empty magma chamber, creating the stunning caldera we see today.
The vibrant aquamarine color of the water in Kerið Crater Lake results from the minerals present in the surrounding soil and rocks, as well as the depth and clarity of the water itself.
Yes, visitors can walk around the rim of the crater for panoramic views and can also take a path down to the edge of the lake for a closer look at its stunning waters and unique geology.
Yes, there is a small entrance fee to visit Kerið Crater. The fee helps with maintenance and conservation efforts to preserve this natural wonder for future generations.