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A broad lava-flow field often forms a lava tube system that consists of a main lava tube and a series of smaller tubes that supply lava to the front of one or more separate flows. When the supply of lava stops at the end of an eruption, or lava is diverted elsewhere, lava in the tube system sometimes drains downslope and leaves partially or ...
A lava tube, or pyroduct, [1] is a natural conduit formed by flowing lava from a volcanic vent that moves beneath the hardened surface of a lava flow.
Lava tubes are the most common and extensive type of lava cave. Lava tubes usually form in pahoehoe lava flows, though exceptions exist. As the lava is emitted from the vent area, it spreads in the path of least resistance. The outer layers of the lava harden, while the interior forms horizontal conduits that channel the advance of the flow.
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The word lava comes from Italian and is probably derived from the Latin word labes, which means a fall or slide. [2] [3] An early use of the word in connection with extrusion of magma from below the surface is found in a short account of the 1737 eruption of Vesuvius, written by Francesco Serao, who described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of ...
Lava River Cave is a lava tube in northern Arizona's Coconino National Forest. At approximately 0.75-mile (1.21 km) long, it is the longest cave of its kind known in Arizona. At approximately 0.75-mile (1.21 km) long, it is the longest cave of its kind known in Arizona.
A cable car system, the Mount Aso Ropeway, opened on 10 April, 1958 to provide access to the mountain. The system ran for the last time in August 2014, then closed due to higher volcanic alert level. In 2015 and 2016, the system was damaged by volcanic ash and earthquakes.
South Table Mountain with its capping lava flows, as seen from the Colorado School of Mines campus in Golden. Castle Rock is the prominence to the left of center. Although not necessarily recorded on United States Geological Survey maps, several historically named features are part of South Table Mountain: