The Blue Lagoon -
The Blue Lagoon closed repeatedly between 2023 and 2024. For weeks, the area was a military-style exclusion zone. Workers built massive defensive berms—walls of compacted rock—to divert potential lava flows away from the power plant and the spa. Remarkably, the facility survived. When the eruption subsided, the lagoon reopened, but the access road now winds past steaming, freshly congealed lava that flowed across the parking lot just months prior.
By the 1980s, locals noticed something peculiar. People with skin conditions like psoriasis who bathed in the runoff found their symptoms drastically reduced. In 1987, the first makeshift changing rooms were built, and the Blue Lagoon was officially born. It took a decade of legal battles and environmental assessments, but by 1999, a formal spa facility opened. The power plant is still running; you can see its steam stacks rising behind the lagoon’s changing rooms. The Blue Lagoon is not a thermal spring in the traditional sense (like the geysers of Haukadalur). It is a engineered ecosystem. The water is a unique cocktail: 70% seawater and 30% freshwater, heated by the plant to a comfortable 37–40°C (98–104°F) year-round. The Blue Lagoon
Clinical studies published in Dermatology and Therapy (2021) showed that 85% of patients reported significant improvement after three weeks. The exact mechanism is debated, but scientists believe the high silica content acts as a physical barrier, locking moisture in, while the geothermal heat increases blood flow to plaques. The lagoon does not charge for this treatment; it is covered by the Icelandic health insurance system. For international patients, it is a last-resort pilgrimage. The Blue Lagoon is a model of the Anthropocene —the geological age where humans are the dominant influence. It is a natural wonder that is entirely man-made, relying on a power plant that burns fossil fuels (though Iceland’s grid is 85% hydro and geothermal, the backup systems do use diesel). The Blue Lagoon closed repeatedly between 2023 and 2024
The contrast is immediate. The air might be -5°C (23°F) with Arctic wind, but the water is a warm embrace. Steam rises in thick curtains, obscuring the distant view of the Eldvörp crater row. The floor is uneven sand and lava rock; you must wear aqua shoes or tread carefully. Remarkably, the facility survived
However, the leftover geothermal brine—rich in minerals like silica, sulfur, and magnesium—could not be returned underground without clogging the rock. So, workers directed the milky, opaque water into the surrounding porous lava fields. To their surprise, the water did not seep away immediately. The silica reacted with the lava, forming an impermeable seal. A shallow, warm lake began to form.
Whether you see it as a paradise or a theme park, one thing is certain: There is nowhere else like it. In a country defined by fire and ice, the Blue Lagoon is the child of both—born from fire (the volcano), shaped by ice (the meltwater), and perfected by the improbable marriage of heavy industry and human healing.
