Lava flows are masses of magma that pour onto the Earth's surface during an eruption; they include both moving lava and the resulting solidified deposits of black rock. Lava flows come in a great ...

This story appears in the April 2011 issue of National Geographic magazine. When? This is the question that has brought two of the world's leading volcano scientists to the center of Africa; it's ...

For the best experience, please enable JavaScript in your browser settings. An aerial view shows lava flowing from the volcanic eruption of Mount Nyiragongo near Goma ...

For the best experience, please enable JavaScript in your browser settings. Flowing lava from the volcanic eruption of Mount Nyiragongo, which occurred late on May 22 ...