Ankara: Indonesia's most active volcano, Mount Marapi, erupted on Monday, sending thick gray ash 1.6 kilometers (nearly a mile) above its peak, state media reported. The eruption occurred early in the morning and was recorded on a seismogram with a maximum amplitude of 30 millimeters and a duration of about 33 seconds.

According to Anadolu Agency, the Mount Marapi Volcano Observation Post (PGA) noted that the ash column was observed to be gray with thick intensity and was drifting eastward. Mount Marapi is currently at Alert Level II status, prompting the Center for Volcanology and Geological Hazard Mitigation to warn of potential threats of cold lava flows, particularly for communities living near rivers that originate from the volcano's peak.

The risk of cold lava flows becomes higher during periods of rainfall or the rainy season. Authorities have advised residents to wear masks covering the nose and mouth to prevent respiratory problems if ash falls in their areas.

Mount Marapi, standing at 2,891 meters (nearly 9,500 feet), is located on Sumatra island. Authorities have long prohibited residents and tourists from entering within a 3-kilometer (1.8-mile) radius of the crater to ensure safety.

Indonesia is home to approximately 130 active volcanoes and is situated along the Pacific Ring of Fire, a zone known for intense seismic and volcanic activity.