Snorkel through the Silfra fissure, a crack between the North American and Eurasian tectonic plates filled with glacial water filtered through lava rock, offering visibility up to 120 meters. Float through four distinct sections—Big Crack, Silfra Hall, Silfra Cathedral at 23 meters depth, and Silfra Lagoon—while experiencing some of the clearest water on Earth.
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