Changes

[[Image:Vent.jpg|thumb|300px|Small lava fountain erupts from a new vent on the flank of Pu`u `O`o spatter and cinder cone on the east rift zone of Kilauea Volcano, Hawai`i.]]'''Vents''' are openings in the Earth's crust from which molten rock and volcanic gases escape onto the ground or into the atmosphere. Vents may consist of a single circular-shaped structure, a large elongate fissure and fracture, or a tiny ground crack. The release of volcanic gases and the eruption of molten rock will result in an assortment of constructional features ranging from enormous [[shield volcano]]es and [[caldera]]s to [[fumaroles]] and small rootless [[hornitos]].<ref>http://volcanoes.usgs.gov/Products/Pglossary/vent.html</ref>

[[Image:Vent.jpg|thumb|300px|Small lava fountain erupts from a new vent on the flank of Pu`u `O`o spatter and cinder cone on the east rift zone of Kilauea Volcano, Hawai`i.]]'''Vents''' are openings in the Earth's crust from which molten rock and volcanic gases escape onto the ground or into the atmosphere. Vents may consist of a single circular-shaped structure, a large elongate fissure and fracture, or a tiny ground crack. The release of volcanic gases and the eruption of molten rock will result in an assortment of constructional features ranging from enormous [[shield volcano]]es and [[caldera]]s to fumaroles and small rootless hornitos.<ref>http://volcanoes.usgs.gov/Products/Pglossary/vent.html</ref>

==References==

==References==