Flúðir: Home of the Secret Lagoon

Tucked away in Iceland's Golden Circle region, the small agricultural town of Flúðir has quietly become one of the country's most sought-after geothermal destinations. With a population of just 400 residents, this unassuming settlement in South Iceland punches well above its weight, drawing thousands of visitors annually to experience the Secret Lagoon—Iceland's oldest natural geothermal pool still in use today.

Located 100 kilometres northeast of Reykjavík along Route 30, Flúðir sits in the heart of the Suðurland region, surrounded by fertile farmland and geothermal activity that has shaped both its landscape and economy for over a century. The town's name derives from the Old Norse word "flúð," meaning flood, a reference to the geothermal springs that have bubbled up from the earth here since time immemorial.

The Secret Lagoon: Iceland's Best-Kept Secret No More

The crown jewel of Flúðir is undoubtedly Gamla Laugin, known internationally as the Secret Lagoon. Established in 1891, this natural hot spring pool predates the Blue Lagoon by nearly a century, making it Iceland's oldest swimming pool. The lagoon maintains a consistent temperature of 38-40°C year-round, fed by a series of hot springs that emerge from the Litla-Reykir geothermal area.

What sets the Secret Lagoon apart from its more famous cousin is its authentically natural setting. The pool's edges blend seamlessly into the surrounding landscape, with steam rising from nearby geysers creating an otherworldly atmosphere. Visitors often spot the small Litli-Geysir erupting every few minutes just metres away, shooting water 1-2 metres into the air—a spectacular sight that can be enjoyed whilst soaking in the warm waters.

The lagoon spans roughly 1,000 square metres and reaches depths of up to 1.2 metres, making it accessible for swimmers of all abilities. Unlike many of Iceland's geothermal pools, the Secret Lagoon uses only natural geothermal water with minimal processing, maintaining the authentic experience that has drawn bathers for over 130 years.

Practical Information for Visitors

Adult admission to the Secret Lagoon costs 5,500 ISK (approximately €35 or $40), with discounts available for seniors, students, and children. The facility operates year-round, opening daily at 10:00 and closing between 18:00 and 22:00 depending on the season. During peak summer months (June-August), advance booking is strongly recommended as daily visitor numbers are capped to preserve the intimate experience.

The lagoon includes changing facilities with lockers (500 ISK), showers, and a small café serving light refreshments. Towels can be rented for 1,500 ISK, though many visitors prefer to bring their own. The facility has been thoughtfully developed to minimise environmental impact whilst providing modern amenities.

Beyond the Lagoon: Exploring Flúðir

Whilst the Secret Lagoon remains the primary draw, Flúðir offers several other attractions that justify an extended stay. The town sits atop one of Iceland's most active geothermal fields, with hot springs scattered throughout the area. Many of these have been harnessed for practical purposes, including the innovative geothermal greenhouse industry that has made Flúðir famous throughout Iceland for its year-round cultivation of tomatoes, cucumbers, and peppers.

The Friðheimar greenhouse restaurant, located 3 kilometres from the town centre, offers visitors the unique experience of dining amongst tomato vines in a geothermally heated greenhouse. Their tomato soup, made from vegetables grown on-site, has achieved legendary status amongst travellers exploring the Golden Circle route.

For those interested in Iceland's equestrian heritage, Flúðir is surrounded by horse farms offering riding tours across the dramatic landscape. The area's relatively flat terrain and well-maintained paths make it ideal for both novice and experienced riders to experience the unique tölt gait of the Icelandic horse.

Geological Significance and Natural Wonders

Flúðir's location within the South Iceland Seismic Zone places it at the intersection of several geological phenomena. The town sits roughly 15 kilometres from the famous Geysir geothermal area, sharing the same underlying geological structures that create the hot springs and geysers that define this region.

The geothermal activity stems from the interaction between the North American and Eurasian tectonic plates, which meet along Iceland's Mid-Atlantic Ridge. As these plates slowly drift apart, they create fissures in the earth's crust that allow superheated groundwater to reach the surface. The water in the Secret Lagoon has been underground for decades, gradually heated by the earth's geothermal energy before emerging at the perfect temperature for bathing.

Getting There and Where to Stay

Flúðir is easily accessible by car via Route 30, with the journey from Reykjavík taking approximately 1 hour and 20 minutes. The town is often included as part of Golden Circle tours, though independent travel allows for a more relaxed experience without the constraints of tour bus schedules.

Accommodation options in Flúðir itself are limited but characterful. The Hotel Flúðir offers comfortable rooms with views across the geothermal landscape, whilst several guesthouses and holiday cottages provide more intimate lodging options. Many visitors choose to stay in nearby Selfoss (25 kilometres away) or make Flúðir a day trip from Reykjavík.

Public transport options are limited, with only sporadic bus services connecting Flúðir to larger population centres. Renting a car provides the flexibility to explore the wider region and discover some of the unmarked hot springs that dot the landscape around the town.

The best time to visit Flúðir is subjective—the Secret Lagoon offers a magical experience year-round, but soaking in natural hot springs whilst snow falls around you during winter months creates particularly memorable moments. Summer visits allow for easier exploration of the surrounding area and longer daylight hours to appreciate the landscape.

Flúðir represents Iceland's geothermal heritage in its purest form, offering visitors an authentic alternative to the country's more commercialised attractions whilst maintaining the high standards of safety and comfort that modern travellers expect.

Getting around Iceland is easiest by car. Compare rental options and find the best deals on Discover Cars — free cancellation available.

Planning your Iceland trip? Don't forget travel insurance — SafetyWing offers flexible Nomad Insurance from $56.28/4 weeks, ideal for Iceland's dramatic terrain and ever-changing conditions. Get covered before you go and explore with confidence.