Silfra is a unique geological formation located in Iceland, where the North American and Eurasian tectonic plates meet. This rift is famous for its crystal-clear waters, which are filled with visibility up to 100 meters. The area is part of the Thingvellir National Park, a UNESCO World Heritage Site, and attracts divers and snorkelers from around the world. The water in Silfra comes from melted glacial ice, filtered through lava rock, giving it a distinct blue hue. The site offers a rare opportunity to swim between two continents, making it a popular destination for adventure seekers and nature enthusiasts alike.