Northern lights, full moon, solfatara, fumaroles, sulphur and other minerals, steam, Hverarond high temperature or geothermal area, Namafjall mountains, Myvatn area, Northeastern Region, Iceland
Hot spring, water fountain, eruption, geyser, Sawmill Geyser, Castle-Grand Area, Upper Geyser Basin, Yellowstone National Park, Wyoming, Western United States, USA, United States of America