 Indonesia's Marapi volcano erupted on December 13, spewing volcanic ash as high as 500-600 meters into the air. According to the country's Volcanology Agency, footage filmed by an eyewitness showed a thick cloud of gray ash above the volcano in West Sumatra. Local residents living in one of the village's closest to Marapi were still seen engaging in daily activities. The head of Indonesia's Volcanology Agency Hendra Ganawan said Wednesday's spewing of ash was relatively minor, with his comments coming after another eruption last week that killed 23 people. The 2,891-meter-high Marapi is one of Sumatra's most active volcanoes in Indonesia and straddles the Pacific's so-called Ring of Fire, which is home to more than 100 active volcanoes.