west-iceland · Iceland
Deildartunguhver
About Deildartunguhver
Deildartunguhver is Europe's most powerful hot spring, producing around 180 liters of boiling water per second at 97°C — and supplying geothermal heating to towns over 60 km away.
History & Background
This extraordinary geothermal spring has been producing boiling water for thousands of years. The volume is so enormous that it provides hot water and district heating to the towns of Borgarnes and Akranes through insulated pipes — one of the longest geothermal district heating systems in the world. Nearby Krauma geothermal spa uses the spring's water cooled to bathing temperature.
Did You Know?
- Iceland generates about 25% of its electricity from geothermal energy
- Geothermal water heats about 90% of all buildings in Iceland
- Iceland has over 600 hot springs and 200+ volcanically heated areas
- The word "geyser" comes from the Icelandic word "geysa" meaning to gush
Tours Near Deildartunguhver
Best-rated Iceland experiences — book with free cancellation
Why Visit
Produces 180 liters per second at 97°C
Did You Know?
Provides heating for towns up to 64km away
Legends of Deildartunguhver
Deildartunguhver has been part of Icelandic folklore for generations. Local tales speak of hidden people (huldufólk) and other supernatural beings who inhabit the area. According to tradition, this place deserves respect and visitors should be mindful of the ancient spirits who call it home.
Stories & Legends
Icelandic sagas and folklore from this area
Hidden Gems Nearby
Steam Patterns
Watch how the steam patterns change with wind direction and temperature throughout the day.
On cold mornings, the steam is most dramatic, creating an otherworldly atmosphere that photographs beautifully.
Mineral Colors
Notice the vivid colors around the geothermal features — yellow sulfur, red iron oxide, and green algae.
These colors represent different minerals deposited by the hot water, creating a natural palette unique to each hot spring.
Bubbling Mud Pots
If present, the bubbling mud pots are mesmerizing to watch — each bubble is a small volcanic event.
The mud is created by acidic steam breaking down the surrounding rock, and each site has a unique bubbling rhythm.
Practical Information
Best Time
Year-round
Duration
15–20 minutes
Access
In Reykholt area, West Iceland. Right next to Krauma baths. Free viewing.
Frequently Asked Questions
Is it safe to touch the geothermal water?
Never touch geothermal water unless at a designated bathing area. Water temperatures can exceed 100°C and cause severe burns.
Can I visit geothermal areas year-round?
Yes, most geothermal areas are open year-round. The steam is even more dramatic in cold winter weather.
Do I need to stay on boardwalks?
Yes, always stay on marked paths and boardwalks. The ground near geothermal features can be thin and unstable.
