The Silfra lava fissure is one of Iceland's best-kept secrets. Silfra, which is situated in the heart of Pingvellir - the site of the world's oldest parliament - is an otherworldly scene. The crystal clear water in the deep fissure gives you a feeling of being weightless as you float down with the lazy current. After an hour of snorkeling we climb out and on to the riverbank to enjoy a warm cup of hot chocolate and some light refreshments.
