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The picture shows overflows of a main lava channel. ... Tephra is made when magma inside the volcano is blown apart by the rapid expansion of hot volcanic gases.
The "Inside the Volcano" tour of the magma chamber is the only tour of the magma chamber that is available to the general public. The tour operated by 3H Travel. [8]
"Inside Yellowstone's Supervolcano". National Geographic. National Geographic Society. Archived from the original on April 16, 2016. The Yellowstone magmatic system from the mantle plume to the upper crust (46,000 km3 magma reservoir below chamber) Inside Yellowstone's Supervolcano, National Geographic
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Satellite picture showing the lava lake of Mount Erebus, Antarctica. Aerial view of a lava lake in Pu’u ’Ō’ō crater, east rift zone of Kīlauea. The crater is about 820 ft (250 m) in diameter. Aerial view of a lava lake atop the Kūpaʻianahā vent on the east rift zone of Kīlauea volcano.
Interior of Amboy Crater showing a lava lake and the distant breach in the cinder cone rim. Interior of Amboy Crater from near breach showing lava lakes. Amboy Crater is a dormant cinder cone volcano that rises above a 70-square-kilometer (27 sq mi) lava field in the eastern Mojave Desert of southern California, within Mojave Trails National Monument.
Often, a volcano may have a deep magma chamber many kilometers down, which supplies a shallower chamber near the summit. The location of magma chambers can be mapped using seismology : seismic waves from earthquakes move more slowly through liquid rock than solid, allowing measurements to pinpoint the regions of slow movement which identify ...
In pictures: A view of cracks on a road due to volcanic activity near Grindavik 06:30 , Namita Singh A view of cracks, emerged on a road due to volcanic activity, near Grindavik, Iceland 13 ...