Go cave exploring and snorkeling in one incredible day on this day trip from Reykjavik. Visit Iceland's Gjábakkahellir cave and the Silfra fissure, both located in the UNESCO World Heritage-listed Thingvellir National Park. Alongside your guide, discover the depths of some of Iceland's most stunning natural wonders as you explore a mysterious cave and snorkel in a pristine, dream-like underground pool.
Following pickup at your Reykjavik pick up point, climb aboard a comfortable, climate-controlled minibus for a 60-minute journey to the UNESCO-listed Thingvellir National Park. Thingvellir has a rich history and is probably as close as you can get to the heart of Iceland. After a safety briefing and introduction to the area, get fitted for spelunking and snorkel gear, and then follow your guide to the lava fields of a typical Icelandic lava cave for a lava caving exploration. Climb through a lava tube and take a 1.5-hour tour of the cave, located in one of the most active volcanic areas in the world. See shield volcanoes, products of lava flows that have left spectacular layers of rock and lava deposits over the years. Before continuing to Silfra fissure, take a break for lunch (own expense). At the Silfra fissure, slip on your snorkeling gear and explore the underground pool of heavenly blue colors and incredible visibility. Drift between the tectonic plates that separate North America and Eurasia, and check out the most scenic areas of the pool accompanied by your guide. After a day of exploring Þingvellir National Park, you'll conclude with drop-off back to Reykjavik. Please note that during the summer time, Gjabakkahellir lava cave will be visited and during the winter months Leidarendi lava cave will be visited. Leidarendi cave is located in the Blue Mountains area.