Silfra Snorkel

South

Silfra is a submerged fissure in Þingvellir National Park where the North American and Eurasian tectonic plates meet, and the water here is clear enough to see more than 100 metres. Glacial meltwater from Langjökull filters through porous lava for decades before reaching the fissure, which is why it arrives essentially pure. Temperature stays at 2–4°C year-round. Dry suits are required and provided by tour operators. The fissure runs through four sections — Big Crack, Hall, Cathedral, and a shallow Lagoon at the end. Hall and Cathedral produce the blue-green tones that make photographs from here immediately recognisable. The Lagoon, wide and open, is where the scale of the visibility becomes most apparent. Snorkeling needs no certification; diving requires Open Water certification plus documented dry-suit experience. Tours depart from a parking area inside Þingvellir, about 45 minutes from Reykjavík via Route 36, and run year-round. Winter visits are quieter. The 17,000 ISK price is for a guided snorkel tour; diving costs more. Book ahead — summer slots fill fast.

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