The Mystery of Volcanoes: The Biggest Eruption in History Volcanoes are often easily associated with frightening historical records. Among the various eruptive events, several events stand out as the most significant. One of them is the eruption of Mount Tambora in Indonesia in 1815. With a VEI (Volcanic Explosivity Index) scale of 7, this eruption not only changed the local landscape, but also had a global impact. The smoke and dust released caused a “year without a summer” in many parts of the world, triggering crop failures, famine and migration. Another frequently discussed mystery is the Krakatau volcano, also in Indonesia, which erupted in 1883. This eruption produced devastating tsunami waves that could be heard up to 4,800 kilometers away. The effects of the Krakatoa eruption were felt as far away as Europe, with the sky filled with volcanic particles which caused an extraordinary sky color phenomenon. Additionally, the 2013 eruption of Mount Pumice in Iceland, although smaller than previously mentioned, suggests that volcanic eruptions can disrupt global air travel. The eruption created an ash cloud that closed airspace in several European countries for weeks. From a scientific perspective, this eruption is a topic of in-depth research to understand the behavior of volcanoes. One method used is computer modeling to estimate the impact of an eruption. Meanwhile, geological observations focus on signs of volcanic activity such as earthquakes, ground deformation and gas emissions. The mystery of volcanoes is also the embodiment of natural forces. Behind the splendor and beauty of volcanoes lies danger that continues to lurk. Residents living around risk areas need to have an effective early warning system. Various mitigation strategies have been developed to reduce risks, including hazard maps and public education. The existence of volcanoes not only provides threats, but also benefits. The land around volcanoes is often very fertile, supporting agriculture. Additionally, geothermal activity around volcanoes creates a renewable energy source. It must be remembered that knowledge about volcanic behavior continues to develop. Scientists are now focusing on developing new technologies in monitoring and analysis, such as drones and advanced sensors. This gives hope that the community can be much better prepared to deal with eruptions that may occur in the future. In Indonesia, with more than 130 active volcanoes, the presence of these mountains is an inseparable part of people’s identity. People often have beliefs and myths related to volcanoes, which adds a cultural dimension to understanding this phenomenon. Controversies about natural resource management and the expansion of residential areas add to the risk burden as many people continue to move to vulnerable areas. For all their attractions and risks, volcanoes are a window into understanding the power of our planet. Indeed, the mysteries of volcanoes are an integral part of the earth’s heritage and arouse human curiosity about the powers of nature.