south iceland
Reykjadalur
About Reykjadalur
Reykjadalur ('Steam Valley') offers one of Iceland's most unique bathing experiences — soaking in a naturally heated river in a geothermal valley just 45 minutes from Reykjavík. The 3 km trail from Hveragerði climbs through a geothermal landscape of steaming vents and boiling mud pots before reaching the warm river. Wooden screens provide basic changing areas, and the river has different temperature zones. It is completely free to visit, making it a popular day trip from the capital.
🐉 Legends of Reykjadalur
Reykjadalur 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.
📖 History of Reykjadalur
The hot river in Reykjadalur is one of Iceland's most unusual natural bathing spots — a natural river with geothermal springs feeding it at varying temperatures, allowing bathers to find their preferred spot. The valley was severely damaged in a 2008 earthquake that hit the Hveragerði area with a 6.3 magnitude tremor, opening new fissures and dramatically changing the geothermal activity in the valley.
✈️ Why Visit
Completely free — just requires a 3km hike
💡 Did You Know?
Trail passes boiling mud pots and steam vents
Key Facts
Name means 'Steam Valley'
Natural hot river for bathing — no facilities
3 km hiking trail each way from Hveragerði
Water temperature varies — hottest near the springs
Valley dramatically reshaped by the 2008 South Iceland earthquake
💎 Hidden Gems
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.
🕐 Best Time
Year-round, trail can be muddy in spring
🚗 Access
Near Hveragerði, 45 minutes from Reykjavík. 3 km uphill hike from trailhead parking.
⏱ Duration
2–3 hours (including hike)
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.
📍 GPS Location
Book a Tour to Reykjadalur
Find guided tours, day trips and activities. Compare prices and book instantly with free cancellation.
🌌 See the Northern Lights
Track real-time aurora activity and plan your Northern Lights trip with AuroraVision.