Krafla is a volcanic caldera in Iceland, known for its 10 km diameter and 90 km long fissure zone. Situated on the Mid-Atlantic Ridge, it has seen 29 eruptions in recorded history. The area includes the crater Víti with a green lake and the geothermal site of Hverir. The Krafla fires between 1975 and 1984 led to nine eruptions and fifteen uplift events. It's also home to a 60 MWe geothermal power station. In 2009, drilling at Krafla revealed molten rhyolite magma 2.1 km deep, sparking the idea of the Krafla Magma Testbed for further scientific exploration.