Diving Þingvellir | Silfra & the Freshwater Fissures

About Þingvellir National Park – Silfra & Freshwater Fissures

Þingvellir National Park sits on the rift where the North American and Eurasian tectonic plates are pulling apart, and it is the spiritual home of Icelandic diving. The park’s signature site, Silfra, is a fissure filled with glacial meltwater filtered through lava for decades, delivering visibility that can exceed 100 metres. Divers float between two continents in water so pure it is safe to drink. Beyond Silfra, quieter fissures such as Davíðsgjá, Flosagjá and Nikulásargjá offer the same gin-clear water with fewer crowds and more challenging navigation. The landscape is dramatic lava rock covered in neon-green troll-hair algae, and the sense of drifting through a prehistoric crack is unforgettable. Diving here is cold, technical and drysuit-only, but the reward is the clearest freshwater on Earth and a bucket-list experience unlike anywhere else.

Highlights

• ✓Silfra Fissure: dive between two continents in 100 m+ visibility glacial water
• ✓Silfra Cathedral: a majestic lava-rock chasm wide enough to swim through
• ✓Silfra Lagoon: a shallow, calm section with vivid colours ideal for photography
• ✓Davíðsgjá: a deeper, tighter fissure for advanced divers
• ✓Flosagjá & Nikulásargjá: quiet moss-walled fissures used by local guides

Getting There

Drive about 45 minutes from Reykjavik to the Silfra car park inside Þingvellir National Park. Most operators run hotel pickups from Reykjavik, and the park has clear signage to the dive site and service huts.