4.7
(41)
309
hikers
11
hikes
Hiking around Kleifarvatn offers an experience through Iceland's Reykjanes Peninsula, characterized by distinctive volcanic landscapes and diverse geothermal features. The terrain includes extensive lava fields, rugged lava rocks, and volcanic mountains, shaped by millennia of eruptions. The area sits directly on the fissure zone of the Mid-Atlantic Ridge, where tectonic plates pull apart, creating visible fissures and cracks. Deep blue waters of Kleifarvatn contrast with black basalt shores, fed by underground springs.
Last updated: May 3, 2026
4.7
(23)
91
hikers
8.00km
02:21
220m
220m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.4
(5)
15
hikers
14.2km
03:59
270m
270m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(4)
48
hikers
3.44km
01:11
180m
180m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
6
hikers
7.55km
02:13
200m
200m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
9
hikers
1.16km
00:20
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Everything is explained very well here, and an overview map makes it easier to get your bearings. It's amazing how much vegetation exists less than 5 meters from a boiling hot pool.
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Only those who make the effort to climb the steep climb will be able to enjoy these views. But at the top, you'll know why you did it.
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Anyone visiting Seltún will be amazed at how closely the area resembles a lunar landscape. With its red, somewhat unreal gravel and steaming vents, the area is dotted with bubbling mud pools, fumaroles, and hot springs.
2
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Smells bad and not suitable for bathing
1
0
Very interesting and not so crowded
3
1
It is worth hiking up and letting your gaze wander into the distance
2
0
The Seltún Geothermal Area, located on the Reykjanes Peninsula in Iceland, is a captivating landscape where the earth's fiery forces come alive. As you step into this otherworldly realm, you are greeted by a mesmerizing display of bubbling mud pots, steaming fumaroles, and vibrant mineral-rich hot springs. Seltún is a geological wonderland that showcases the raw power of geothermal activity. The area is characterized by its vibrant hues of red, yellow, and green, created by the presence of sulfur and other minerals. The vivid colors against the stark volcanic backdrop create a surreal and captivating scene. Walking along the wooden boardwalks that wind through the geothermal area, you'll witness the dynamic nature of the Earth. The bubbling mud pots, spouting steam vents, and hissing fumaroles create a symphony of natural sounds and a sensory experience like no other. The pungent scent of sulfur permeates the air, adding to the unique ambiance of the place. Seltún is not only a feast for the senses but also a destination for geothermal exploration. The area provides a glimpse into the geological processes that have shaped Iceland over millennia. It offers a fascinating opportunity to learn about the Earth's inner workings, as well as the importance of geothermal energy to Iceland's sustainable development. Visiting Seltún allows you to witness the raw power and beauty of nature, where steam rises from the depths of the Earth and the land seems to come alive. It's an unforgettable experience that immerses you in Iceland's geothermal wonders and leaves you with a profound appreciation for the forces that shape our planet.
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Small but nice!!!! We recommend!
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There are over 10 hiking routes available around Kleifarvatn, offering a range of experiences through the volcanic landscapes. These include both easy paths and moderate routes.
The terrain around Kleifarvatn is characterized by extensive lava fields, rugged lava rocks, and volcanic mountains. You'll traverse paths shaped by millennia of volcanic eruptions and experience the unique environment of the Mid-Atlantic Ridge, where visible fissures and cracks mark the pulling apart of tectonic plates.
Absolutely. The area is rich in geothermal features like hot springs, steam vents, and bubbling mud pools, especially around the Seltún and Krýsuvík geothermal areas. You can also witness the dramatic geological setting of the Mid-Atlantic Ridge. Nearby, you might explore the vibrant green explosion crater of Grænavatn or even the Leiðarendi cave for lava tubing.
The trails around Kleifarvatn are highly rated by the komoot community, with an average score of 4.7 stars from more than 30 reviews. Hikers often praise the otherworldly volcanic landscapes, the striking contrast of the lake's deep blue waters against black basalt shores, and the unique geothermal wonders.
Yes, there are several easy routes suitable for beginners. For example, the Viewpoint – Seltún Geothermal Area loop from Vogar is a short 0.9-mile (1.4 km) trail that takes about 23 minutes, leading through fascinating geothermal features. Another easy option is the Viewpoint – Seltún Geothermal Area loop from Ketill, which is 3.4 km long.
Yes, many of the trails around Kleifarvatn are designed as loops, allowing you to start and end at the same point. A popular moderate circular route is the Seltún Parking Area – Arnarvatn Lake loop from Ketill, which is 5.0 miles (8.0 km) long and explores volcanic terrain.
Kleifarvatn offers a unique experience year-round. While summer provides milder weather and longer daylight hours, the stark beauty of the volcanic landscape can be particularly dramatic in other seasons. Be prepared for changeable weather conditions regardless of the time of year.
Many of the easier, shorter loop trails, especially those around the Seltún Geothermal Area, can be suitable for families. These paths often have wooden walkways and offer fascinating sights like bubbling mud pools and steam vents, which can be engaging for children. Always check the specific trail length and difficulty before heading out with family.
Winter hiking around Kleifarvatn is possible and offers a uniquely serene experience with snow-dusted landscapes. However, conditions can be challenging with shorter daylight hours, colder temperatures, and potentially icy paths. Proper winter hiking gear, including warm layers and sturdy, waterproof boots, is essential. Always check weather forecasts and trail conditions before you go.
Parking is generally available at key trailheads and popular attractions like the Seltún Geothermal Area. For instance, the Seltún Parking Area – Arnarvatn Lake loop from Ketill starts from a designated parking area, making access convenient for hikers.
Public transport options directly to the Kleifarvatn hiking areas are limited. It is generally recommended to reach the region by car to access the various trailheads and explore the wider Reykjanes Peninsula. Some guided tours may offer transport, but for independent hiking, a personal vehicle provides the most flexibility.
While specific regulations can vary, generally, dogs are permitted on hiking trails in Iceland, provided they are kept on a leash and owners clean up after them. It's always best to check for any specific signage at trailheads or local regulations, especially in protected geothermal areas, to ensure a pleasant experience for everyone.
Due to Iceland's unpredictable weather, layering is key. Wear moisture-wicking base layers, insulating mid-layers, and a waterproof and windproof outer shell. Sturdy hiking boots with good ankle support are essential for navigating the volcanic and sometimes uneven terrain. Don't forget a hat, gloves, and plenty of water, even on shorter hikes.


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