The Indonesian volcano Anak Krakatau has once again demonstrated its power with a massive eruption, resulting in a significant volume of volcanic ash being ejected into the atmosphere. The ash plume spread over a large area, creating a serious threat to air transportation. Authorities were forced to cancel thousands of flights due to the risk of ash entering aircraft engines, which could cause damage and pose a threat to flight safety. In addition to disrupting air traffic, the eruption negatively affected air quality in adjacent areas — the concentration of suspended particles in the atmosphere rose sharply, posing a health hazard to local residents, particularly people with respiratory diseases. Anak Krakatau, located in the Sunda Strait between the islands of Java and Sumatra, is one of Indonesia's most active volcanoes and regularly demonstrates its presence through eruptions of varying intensity. It formed at the site of the legendary Krakatau volcano, whose catastrophic eruption in 1883 became one of the most devastating in human history. Local authorities continue to monitor seismic and volcanic activity, warning the population of possible further eruptions and recommending precautionary measures in areas adjacent to the volcano.