How Volcanoes Work

 Image Described in Caption
 Nyiragongo and Nyamuragira Volcanoes -- These volcanoes lie within the east Aftican rift system in the Republic of the Congo. Nyiragongo is the prominent peak to the right, and Nyamuragira is the broader volcano to the left. Nyiragongo erupted on January 17, 2002, sending streams of lava (red in this false-color image) across the town of Goma (pinkish region) and into Lake Kivu (foreground). More than 100 people were killed, over 12,000 homes destroyed, and hundreds of thousands of people were forced to flee their community. Courtesy of NASA.