Discover an underwater wonderland on an unforgettable snorkel mission that lets you explore a continental drift in Iceland's Þingvellir Park. Don a mask, flippers, and a drysuit and descend into a canyon within a giant lava field, glimpsing supernatural shades of blue and stunning rock formations.

After arriving at Þingvellir Park, allow your dive instructor to outfit you with the necessary accoutrements—a mask, flippers, and a drysuit that will keep you warm despite the water's icy chill. As you make your way to the Silfra fissure, glimpse the lush vegetation and glistening lakes of this UNESCO World Heritage Site. Finally, reach the perfect spot for a taking the plunge.

Frequently rated as one of the world's top 10 dive sites, the depths of the Silfra fissure are a sight to behold. Drift peacefully in the comfort of your insulated drysuit, and enjoy up to 328 feet (100 m) of underwater visibility. Note the incredible rock formations just below the cerulean depths and enjoy the opportunity to perfect your doggy paddle in this most unique of snorkeling locations.

As you emerge from the water, learn about the incredible tectonic forces that have caused the continental drift between the North American and Eurasian continents, and continue to marvel at the magical sub-aquatic paradise it has produced.