One does not simply swim into Mordor.
The U.S. Geological Survey defines a volcano as a vent in Earth's surface, either on land or on the seafloor, from which molten rock called magma, as well as ash and gases, can erupt or ooze. Different types of volcanoes erupt in different ways, with some erupting spectacularly and others, most notably Hawaii's shield volcanoes, steadily oozing lava. There are different types of volcanoes, including stratovolcanoes, shield volcanoes and cinder cones, and different types of lava and other volcanic flows. Volcanoes can be active, dormant or extinct. Most of Earth's volcanoes are located along the Pacific Ring of Fire, where many of Earth's tectonic plates subduct beneath another plate. Currently volcanic eruptions cannot be predicted, though most of the big, active volcanoes are routinely monitored and authorizes warn when they think an eruption is likely. Read below for the latest news on volcano monitoring and research, current volcanic eruptions and to see amazing pictures of volcanoes.
A fiery eruption just gave the Philippines’ most active volcano a face-lift, according to news reports.
A journal of a Maine reverend reveals detailed sunspot observations during the 1816 "year without a summer."
Footage of lava barreling toward and then melting the lens of a GoPro camera may be one of the hottest (literally) recordings online.
A major eruption of Mount Agung, the tallest volcano on the island of Bali, may be coming within hours, experts say.
The boundary between the Earth's outermost layer, the crust, and the underlying mantle is speckled with mysterious, blob-like regions that slow down seismic waves and lead to volcanic eruptions.
Indonesia's Mount Agung is spewing towering clouds of ash, raising concerns that the giant 10,305-foot-tall (3,140 meters) volcano might have a big eruption soon, according to news sources.
Thousands of years ago, fallout from volcanic activity may have sounded a death knell for an Egyptian dynasty.
Eruptions from one of the most active volcanic regions in the world sent plumes of ash and steam into the sky this week, as captured in a spectacular image by an Earth-monitoring satellite.
Aerial and remote surveys recently revealed nearly 100 volcanoes lurking beneath the Antarctic ice that had never been mapped before.
The location of a long-lost natural wonder in New Zealand has been identified, thanks to an accidentally found diary of a 19th century geographer.