The Krafla Viti Crater in Iceland is a must-see spot near Lake Myvatn, known for its stunning blue water and colorful surroundings. The crater was formed during an explosive eruption in 1724 and offers a surreal atmosphere with geothermal activity and picturesque mountains. Visitors can take a leisurely rim walk around the crater, but swimming is a big no-no! Accessible by car, it's a great addition to any North Iceland itinerary for those seeking unique natural wonders.