Silfra is a crack in the Earth's crust where the North American and Eurasian plates are slowly pulling apart. Fed entirely by glacial meltwater filtered through porous lava rock for up to a hundred years, the water here is among the purest on the planet. Temperatures hover just above freezing, but the provided drysuit keeps you warm and comfortable as you glide through one of the most spectacular underwater landscapes imaginable.
Your guide will lead you through three distinct sections of the fissure — Silfra Hall, Silfra Cathedral, and the Silfra Lagoon — each with its own character and colour palette. The famous troll hair algae carpets the rocky floor in vivid green and yellow, swaying gently in the current. You'll move downstream at a relaxed pace, pausing to absorb the silence and the surreal beauty that surrounds you on all sides.
The tour departs from the Silfra parking area inside Thingvellir National Park, just a short drive from Reykjavik. All snorkeling equipment including a high-quality drysuit, hood, gloves, fins, and mask is provided and fitted before entry. A professional guide accompanies your group throughout, briefing you on technique, safety, and the geology beneath your fins. Free digital photos delivered after the tour mean you leave with memories captured as vividly as the experience itself.
