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Silfra Fissure (Silfra Diving & Snorkeling)
Best time to visit
Late morning on clear days gives the best light and calmer winds for photos; summer offers longest daylight while winter provides dramatic low light and aurora possibilities.
Budget tips
Access requires a paid guided tour, typically $120–$200; Thingvellir charges a small parking fee, so save by booking midweek or off-season discounts and comparing operator packages.
Recommended for
Adventure seekers, Cold-water snorkelers and divers, Underwater photographers, Nature lovers
Plan your visit
3-4 hours
About
Faits rapides: Crystal-clear water offers visibility beyond 100 meters, letting snorkelers drift between tectonic plates as if floating in liquid glass. You’ll feel an immediate chill from glacial melt, yet the surreal silence and vivid blue channels make the cold worth every breath.
Points forts: Glacial meltwater filters through porous lava for roughly 30 to 100 years before surfacing, giving you water so clear that visibility often exceeds 100 meters while the temperature hovers a sharp 2 to 4 °C. Guides love to remind people that the swim follows a rift between two tectonic plates that pull apart about 2 centimeters each year, and in the narrow "Cathedral" section sunlight slices into luminous shafts while the fissure plunges toward its roughly 63 meter deepest point.
Insider tips
- Wear swimwear under the provided drysuit and layer thermals; wetsuit alone will not be warm enough.
- Bring a waterproof camera or buy an operator GoPro package for reliable underwater photos.
- Arrive at least 45 minutes early for briefing and gearing; choose the first or last tour to avoid mid-day crowds.
- Ask for a drysuit orientation if new to cold-water snorkeling, and pick snorkeling rather than deep diving if you feel uneasy.
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