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New page: 300px|thumb|Lava fountain of the Pu`u `O`o cinder and spatter cone on Kilauea Volcano, Hawai`i.A jet of lava sprayed into the air by the rapid formation and...
[[Image:Lava_fountain.jpg|300px|thumb|Lava fountain of the Pu`u `O`o cinder and spatter cone on Kilauea Volcano, Hawai`i.]]A jet of [[lava]] sprayed into the air by the rapid formation and expansion of gas bubbles in the molten rock is called a '''lava fountain'''. Lava fountains typically range from about 10 to 100 m in height, but occasionally reach more than 500 m. Lava fountains erupt from isolated vents, along fissures, within active [[lava lake]]s, and from a [[lava tube]] when water gains access to the tube in a confined space.
[[Category:Geology]]
[[Category:Geology]]