Silfra Fissure
Silfra
An underwater fissure between the North American and Eurasian plates, with glacier-fed water so clear that visibility often exceeds 100 meters.
Silfra is an underwater rift within Þingvellir National Park. Its spring water is glacier meltwater from Langjökull, filtered through lava for decades, and visibility often exceeds 100 meters. It is widely regarded as one of the world's best snorkeling and diving sites. Tours are only available through licensed operators, and you wear a drysuit throughout. A snorkeling tour lasts about 3 hours, with roughly 40 minutes in the water. Diving requires a dry-suit diving certificate or equivalent experience, and there are age and health requirements. Book well in advance. The parking lot is near Park P5.
Opening hours
Guided tour times only (reservation required)
Nearby sights
- Thingvellir National Park
- Öxarárfoss
- Þingvallavatn
- Reykjadalur Hot Spring Thermal River
- Hveragerði
- Kerið
- Geothermal Exhibition at Hellisheiði Power Plant
- Laugarvatn Fontana