Increased volcanic activity in Indonesia is a natural phenomenon that affects many aspects of life. Indonesia is located in the Pacific Ring of Fire, where tectonic plates meet, creating many active volcanoes. In recent years, the increasing frequency of eruptions and volcanic activity has become a serious concern for the government and society. Several volcanoes that have experienced a significant increase in activity include Mount Merapi, Mount Sinabung and Mount Semeru. Mount Merapi, located in Yogyakarta and Central Java, is known as one of the most active volcanoes in Indonesia. In certain periods, this mountain experienced an eruption phase that disturbed local residents, with the release of smoke and volcanic material. Meanwhile, Mount Sinabung in North Sumatra experienced a large eruption from 2013 until now. This activity led to the evacuation of thousands of residents and large material losses. Sinabung shows that volcanoes can erupt after a long hiatus, making them an unpredictable threat to the surrounding area. Mount Semeru, the highest peak on the island of Java, is also experiencing increased activity. As an active volcano, Semeru often emits hot clouds and lava, which can potentially endanger nearby communities. Many areas around this volcano must improve preparedness and mitigation strategies. Apart from the direct impact on the population, this increase in volcanic activity also has an impact on the environment. Volcanic ash can damage agriculture, contaminate water sources and affect air quality. Therefore, it is important for the government to continue to monitor and provide the public with the latest information about potential dangers. Research into volcanic activity is critical to understanding its underlying patterns and mechanisms. Many institutions, including the Center for Volcanology and Geological Hazard Mitigation (PVMBG), focus on observing and researching volcanoes in Indonesia. The data obtained from these observations helps in making decisions regarding evacuation and disaster management strategies. Public education regarding the potential dangers of volcanic eruptions must be improved. Communities need to understand how to deal with disasters, including evacuation plans and risk mitigation. Regular training and simulations can help prepare citizens for the worst situations. In the face of increasing volcanic activity, collaboration between the central and regional governments is very important. Synergy between various parties, including research institutions and non-governmental organizations, is needed to develop effective disaster mitigation policies. The establishment of a technology-based communications network can ensure that information about volcanic activity is conveyed quickly and accurately. Overall, the increase in volcanic activity in Indonesia is a challenge and requires serious attention. By increasing research, education and collaboration between institutions, the impact of this disaster can be minimized. Sustainability of life and environmental protection must be a top priority in facing the potential threats posed by volcanoes in Indonesia.