The Golden Circle is a popular 300-kilometre circuit in southwest Iceland encompassing Thingvellir National Park, Gullfoss Waterfall, and the Geysir Geothermal Field. Thingvellir National Park sits directly over the original splitting point of the North American and Eurasian continents, and visitors can clearly see the rift valley formed by the shifting of the tectonic plates. The Silfra Fissure, in the park’s Thingvallavatn Lake, offers the chance of diving or snorkelling between the continents in water that displays exquisite shades of blue. The Geysir Geothermal Field at Haukadalur is home to bubbling hot springs, fumaroles and two geysers, one of which is extremely active, shooting spouts of steaming water as high as 40 metres into the air every 5 to 10 minutes. The other-worldly Gullfoss Waterfall is a massive cascade of water over a 36-metre high drop.