Earlier today, Indonesia's Mount Kelud erupted violently, killing two, sending massive ash plumes miles into the air, and causing more than 100,000 to evacuate parts of Java. The explosive eruption could be heard by residents more than 100 miles distant. Meanwhile, Mount Sinabung - another of Indonesia's 150 volcanoes, continues its recent months of sporadic activity. Earlier this month, one of the scorching pyroclastic flows that poured down Sinabung's flanks overwhelmed a group of villagers, killing 16. Collected here are images of Kelud's activity today, and some of Sinabung's recent outbursts.