Silfra Fissure Guided Diving Tour in Þingvellir

Silfra fissure in Þingvellir National Park is one of the most extraordinary dive sites on the planet. Fed by glacial meltwater that has filtered through underground lava rock for decades, the water here achieves a clarity unmatched anywhere on earth — with visibility stretching beyond 100 metres. The fissure itself marks the boundary between the North American and Eurasian tectonic plates, first cracked open in 1789 and never freezing, maintaining a constant water temperature of 35–37°F year-round.

On this guided diving tour, your expert instructor begins with a full equipment briefing and dry suit fitting before leading you through the four iconic sections of the fissure. You will glide through the Big Crack, Silfra's narrowest passage where the continental plates are close enough to touch, then on to Silfra Hall, renowned for its vivid colours and extraordinary clarity. The tour continues through Silfra Cathedral and concludes at the serene Silfra Lagoon.

Jagged canyon walls, aquatic plant life, and fish accompany you throughout the dive, creating an otherworldly underwater landscape unlike anything found elsewhere in Iceland. Even seasoned divers consistently describe Silfra as a singular experience.

After surfacing, warm up with hot chocolate and cookies while you take in the surroundings of Þingvellir — Iceland's most historically significant national park. All diving equipment and the Silfra entrance fee are included in the tour price.

This is a meet-on-location tour — you will make your own way to the Silfra Meeting Point inside Þingvellir National Park. No hotel pickup is provided.

On arrival, your guide will conduct a thorough safety and equipment briefing, fit you with a dry suit, and confirm you are comfortable before entering the water. The guided dive then takes you through all four sections of the fissure in sequence.

• Big Crack — Silfra's narrowest passage, where the two continental plates are within arm's reach
• Silfra Hall — a wide, brilliantly coloured chamber with exceptional visibility
• Silfra Cathedral — a dramatic, cathedral-like section of the fissure
• Silfra Lagoon — the calm, open finale of the dive

The total tour duration is 2 hours 30 minutes. After the dive, hot chocolate and cookies are served. Participants must be certified divers and meet all equipment and medical requirements before joining the tour.

Silfra is the only place in the world where you can dive directly between two tectonic plates in water of this purity. The glacial spring water filtering through lava rock for decades produces visibility that professional underwater photographers travel specifically to capture.

Operator Dive by Icelandia provides all necessary equipment, including a dry suit, and keeps group sizes manageable so your guide can give each diver proper attention. The Silfra entrance fee is pre-included, meaning no separate payment is needed at the site. Post-dive hot chocolate and cookies round off a genuinely memorable experience in one of Iceland's most iconic natural settings.