Canonical URL: https://www.iceland.org/geysers/strokkur Content updated: 2026-09-10 This is the Markdown representation of the page. Interactive tools and forms are available on the [HTML page](). Source-check and review dates retain the meanings stated in the article. --- # Strokkur: Iceland's Most Active Geyser Iceland's most reliable geyser, erupting frequently with variable pauses with a column of boiling water and steam up to 20 meters high. Updated September 10, 2026 · [Published by Iceland.org]() · [Writing & review]() Location South Iceland Haukadalur Valley, Golden Circle ## Quick Answer Strokkur in Haukadalur erupts frequently, with variable pauses, sending boiling water 15-20 meters into the air. Free to visit, on the Golden Circle route in South Iceland. Strokkur is Iceland's most famous active geyser, situated in the Haukadalur geothermal valley just beside the now-dormant Great Geysir. Its eruptions arrive in varying sequences: bursts of boiling water that reach 15-20 meters into the air. The name Strokkur means "churn" in Icelandic, a good description of the churning action visible in its vent just before each eruption. Watch for the blue bubble that forms at the surface moments before the water column shoots skyward. Sources and page update Updated: 2026-09-10 Stay behind all barriers and ropes around Strokkur. The erupting water is over 100 degrees Celsius. Wind can carry hot spray toward spectators, so position yourself upwind when possible. For sourcing standards and how to report an error, see the editorial policy. Official sources to check - [SafeTravel]() - [Road.is]() - [Icelandic Meteorological Office]() - [Environment Agency of Iceland]() Eruption Interval Variable Some eruptions contain several fountains, followed by a longer recharge. Eruption Height 15-20 m Typical eruptions reach 15-20 meters, though occasional bursts can exceed 30 meters under the right conditions. Admission Cost Free No entrance fee is charged to visit Strokkur or the surrounding Haukadalur geothermal area. ## What to Expect ### The Blue Bubble Just before each eruption, a turquoise dome of water swells at the surface as superheated water pushes upward. Photographers wait for exactly this moment. ### Watch a Complete Cycle Allow time for more than one cycle; the intervals vary and no short visit guarantees a set number of eruptions. ### 15-20 m Water Columns Typical eruptions launch boiling water (100°C+) 15-20 meters high. Occasional larger eruptions can exceed 30 meters under the right conditions. ### Free Admission, Open 24/7 No entrance fee, no booking needed. The viewing area is open around the clock year-round. Restrooms and a restaurant at the adjacent Geysir Center. ### What to Bring & Safety Windproof jacket, camera set to burst mode. Stand upwind to avoid hot spray. Stay behind barriers. The erupting water is over 100°C, so keep children at a safe distance. ### Photography Tips Position yourself with the sun behind you for best lighting. Use burst mode to capture the blue bubble. Video mode means you will not miss the eruption. ## Getting There Strokkur is located in the Haukadalur valley, approximately 100 km northeast of Reykjavík. Drive east on Route 1 then turn north onto Route 35. The journey takes about 1.5 hours on fully paved roads; no 4WD required. A large free parking lot is available at the Geysir Center, from which Strokkur is a 2-minute walk. The nearest town with fuel and shops is Laugarvatn (25 km). Strokkur is a standard stop on virtually all Golden Circle tours (Þingvellir, Strokkur/Geysir, Gullfoss), and is one of Iceland's most accessible natural attractions. Gullfoss waterfall is just 10 km further along Route 35. ## Best Time to Visit Year-round: Strokkur is active throughout the year, but weather influences its eruption intervals. June through August: long daylight (up to 21 hours) and mild temperatures (10-15°C), but peak crowds between 10 AM and 4 PM. Arrive early morning or late afternoon. September through October: fewer tourists, and cooler air makes the steam columns more visible. November through February: eruptions against snowy landscapes with far fewer visitors. Northern lights are sometimes visible on clear evenings. The Golden Circle roads are maintained for winter driving. March through May: returning daylight with moderate visitor numbers. There is no fixed five- or ten-minute countdown. ## Why the wait changes A [November 2025 study in Scientific Reports]() analysed about 650,000 fountains recorded over 4.5 years. Stronger wind was associated with longer intervals; colder air had a smaller effect. The records cover 2017–2018 and 2020–2023, so this is an explanation of the system, not a prediction for your visit. Keep watching after the first fountain: some eruptions contain several bursts. Then expect the next recharge to take a different length of time. Stay behind the barriers throughout the cycle, including while the surface appears quiet. Planning help ## Strokkur FAQs Quick answers with safety notes where it matters. **How often does Strokkur erupt?** Strokkur erupts frequently, but it does not follow a fixed timer. It can produce several fountains in a sequence, followed by a longer pause. Allow time to watch a whole cycle rather than expecting an eruption exactly every five or ten minutes. **Is Strokkur free to visit?** Yes, visiting Strokkur and the surrounding Haukadalur geothermal area is completely free. There is no entrance fee. The nearby Geysir Center has a restaurant, shop, and restrooms available for visitors. **What is the blue bubble at Strokkur?** Just before each eruption, a blue bubble of water forms at the surface of Strokkur's vent. This occurs as superheated water from below pushes upward and domes at the surface for a brief moment before exploding into a column of steam and water. It is a favorite moment for photographers. **Can Strokkur's eruptions be dangerous?** Strokkur is generally safe to observe from the marked viewing areas. However, the water is boiling hot (over 100 degrees Celsius underground), and wind can carry spray toward spectators. Always stay behind barriers and ropes, and keep a respectful distance from the vent. [Back to Geysers]() Country reference: [Iceland statistics]().