Geothermal pools are natural hot springs that are heated by the Earth's internal heat. This heat comes from the decay of radioactive materials and the Earth's molten core. The water in these pools is often rich in minerals, which can provide therapeutic benefits and create unique colors and formations. These pools can be found in various locations around the world, including regions with volcanic activity, such as Iceland and New Zealand. Many geothermal pools are popular tourist attractions, offering visitors a chance to relax in warm, mineral-rich waters while enjoying beautiful natural surroundings.