The situation is even more complex in the case of volcanoes that have been dormant for long periods and have not erupted in historical times. We have no record of monitoring data to use as a background, and the detailed knowledge about previous eruptions may also be lacking (e.g., Sina...
A visit to the Hawaii Volcanoes National Park and/or one of the many lava tubes on our island are great places to start if you want to immerse yourself in our volcanoes. Climb down a steep ladder to get to the lava tube entrance of the Kaumana Caves close to Hilo Guided volcano tours...
Volcanoes are both terrifying and magnificent phenomena to behold. In Iceland, they're simply a natural part of life that the residents have learned to live with. The about 130 volcanoes in the country are one reason it's known as the Land of Fire and Ice — glaciers are the other reason...
These small volcanoes usually have a circular footprint, and their flanks usually slope at an angle of about 30 to 40 degrees. Most cinder cones have a bowl-shaped crater at the top. Cinder cones are found in many parts of the world. Countries that have many cinder cones include: Australi...
with fissure swarms that spread away from it and consist of smaller volcanoes. While most of the volcanic systems are dormant, about 30 to 40 of them have erupted within the last few centuries and are considered active. The longest and most active system in Iceland is the Bárðarbunga sy...
with fissure swarms that spread away from it and consist of smaller volcanoes. While most of the volcanic systems are dormant, about 30 to 40 of them have erupted within the last few centuries and are considered active. The longest and most active system in Iceland is the Bárðarbunga sy...
Many of Kilauea's pre-1924 explosive eruptions that produced significant ash deposits probably happened when the volcano's summit crater was so deep that its floor was below the water table, letting groundwater seep in to form a lake. Whenever magma erupted into the lake water, violent explosio...
In 1872, the U.S. government signed the Yellowstone National Park Act into law and created what the National Park Service (NPS) refers to as "the world's first true national park." Today, there are thousands of national parks throughout the world, and four of them — Rocky Mountain, Me...
Pinnacles National Park in California was born after several volcanoes erupted, forming the unique landscape of the park, which is packed with canyons, rock spires, and woodlands. When the park was established in 1908, it was only 2,060 acres, but has now grown to 26,000. Because of hot...
In 1872, the U.S. government signed the Yellowstone National Park Act into law and created what the National Park Service (NPS) refers to as "the world's first true national park." Today, there are thousands of national parks throughout the world, and four of them — Rocky Mountain, Me...