Kleifarvatn

Kleifarvatn is a serene and strikingly beautiful Icelandic lake located on the Reykjanes Peninsula in southwestern Iceland. Nestled between rugged volcanic hills and surrounded by stark, otherworldly landscapes, Kleifarvatn is the largest lake on the peninsula, covering an area of about 10 square kilometers (3.9 square miles). The lake is fed by underground springs and has no visible outlet, making it unique among Iceland’s lakes.

Kleifarvatn is particularly known for its shifting water levels, which have been observed to drop dramatically following seismic activity, as occurred after an earthquake in 2000. The surrounding area is rich in geothermal features, with nearby hot springs, steam vents, and bubbling mud pools adding to the mystique of this remote location. The dark volcanic landscape, combined with the deep blue waters of the lake, creates a stark and captivating contrast that draws photographers, hikers, and nature enthusiasts.

The lake is also steeped in local folklore, with legends of a mysterious creature said to inhabit its depths. Despite its eerie reputation, Kleifarvatn is a peaceful place, perfect for those seeking solitude and an escape into Iceland’s wild and untamed nature.

Quickview

• Location: Reykjanes Peninsula, Southwest Iceland

• Size: 8 square kilometers (3.1 square miles)

• Maximum Depth: 97 meters (318 feet)

• Elevation: 139 meters (456 feet) above sea level

• Geology: The lake lies directly on the Mid-Atlantic Ridge, where the Eurasian and North American tectonic plates meet.

• Folklore: A black whale-like worm monster lives in Kleifarvatn.

Is it possible to swim in Kleifarvatn?

While swimming in Kleifarvatn Lake is possible, it is not common due to the cold water temperatures and the lake's remote, rugged environment. However, you can both dive in Kleifarvatn lake and join a geothermal snorkeling trip.

Geography of Kleifarvatn

The Kleifarvatn Lake is in an extremely geothermal area, surrounded by volcanic mountains. Due to the fact that no rivers run in or out of the lake, the water supply of the lake comes from underground springs. In regard to the isolation of this area, part of the mystique of this lake also lies in the earth beneath it. Curiously, after an earthquake in the year 2000, the lake shrank dramatically when fissures opened in its bed and let the water drain away. However, with time, the levels of water have gradually gone back to their normal position.

The immediate surroundings are basically a lava field, making the place a real dreamland for geologists. Volcanic craters, hot springs, and sulfuric vents can be found not far from the lake, adding an otherworldly touch to it. This unique geography makes Kleifarvatn one of the most striking landscapes in Iceland.

What to Expect at Kleifarvatn Lake

Visitors to Kleifarvatn Lake can expect a serene and rugged environment perfect for outdoor activities like fishing, hiking, and diving. The lake is known for its deep waters, making it an excellent location for experienced divers looking to explore the underwater landscape, although diving is not as common as other activities.

At the lake itself there are no real facilities or large car parks. There are a few small spaces where you can drive off the road next to the lake and enjoy the view.

For parking and bathroom facilities the closest spot is Krýsuvík, only a 5 minute drive away, where you’ll also find the Seltún Geothermal area.

Activities at Kleifarvatn

• Fishing: The lake is home to arctic char and other fish species, making it a popular spot for anglers. However, fishing here requires a permit.

• Hiking: Several trails meander through the surrounding lava fields and mountains, offering a closer look at the area’s unique geology and breathtaking views over the lake.

• Diving: For experienced divers, Kleifarvatn’s deep waters and fascinating underwater features make it a compelling, albeit lesser-known, dive site.

• Snorkeling: Visitors can also join a geothermal snorkeling tour in the lake. It’s advised to go with a guide that knows the lake and the area due to the cold temperatures and lack of facilities.

Where is Kleifarvatn?

Kleifarvatn is located in the Reykjanes Peninsula in Southwest Iceland, about halfway between Reykjavík and the Blue Lagoon. It lies just south of Hafnarfjörður and is easily accessible by car.

• GPS Coordinates: 63.9290° N, 21.9786° W

How to Get to Kleifarvatn?

To reach Kleifarvatn from Reykjavík, drive southwest on Route 41 towards Hafnarfjörður. From there, follow Route 42 toward the Reykjanes Peninsula. The journey is approximately 30 kilometers (18 miles) and takes about 40 minutes by car.

If you’re visiting Kleifarvatn as part of a trip to the Blue Lagoon or the Reykjanes Peninsula, it’s a convenient stop along the way. The area is also connected to nearby geothermal sites like Krýsuvík and the Seltún geothermal field, making it an excellent addition to a day of exploring South Iceland’s geothermal wonders.

Kleifarvatn Lake and the Northern Lights

One of the best observation points for the Northern Lights, especially during the dark winter months, is Kleifarvatn. Very remote and away from city lights, Kleifarvatn is an ideal place to go for stargazing and aurora hunting. If there was something possibly adding magic to the sight, then it would be where reflections on the lake's surface literally occur.

Visiting Kleifarvatn in winter is a different kind of beauty: snow-dusted lava fields, possibly frozen lake-in an icy, tranquil landscape. At the same time, visitors must take into consideration that it is very cold and the roads and hiking trails may be slippery, thus proper winter equipment is needed.