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lava fountain

Volcanology
Lava fountain on Etna volcano (June 24, 2001)
Lava fountain on Etna volcano (June 24, 2001)
Lava fountain on Etna volcano (Feb 16, 2000)
Lava fountain on Etna volcano (Feb 16, 2000)
Lava fountain on Etna volcano (Oct 30, 2002)
Lava fountain on Etna volcano (Oct 30, 2002)
Lava fountain on Etna volcano (June 24, 2001)
Lava fountain on Etna volcano (June 24, 2001)
Lava fountain on Etna volcano (Feb 15, 2000)
Lava fountain on Etna volcano (Feb 15, 2000)
Lava fountain n Etna volcano (17 June, 2001)
Lava fountain n Etna volcano (17 June, 2001)
Jets of fluid lava propelled into the air from an erupting vent, driven by expanding gasses.
Lava fountains are sustained jets of (usually very) fluid lava into the atmosphere. Lava fountains occur commonly on basaltic volcanoes such as Kilauea, or Etna.

The fountain gains its momentum by the expansion of gas bubbles that dissolve from the magma as pressure falls while it is rising in the conduit.

Heights, appearance, duration and erupted volumes of lava fountains can vary greatly. Strong fountains can reach several hundreds of meters. Lava fountains of Vesuvius in 1779 have even reached an estimated height of 3 km!
 

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Redating the Minoan eruption of Santorini: A 3600 y.o. fossil olive tree discovered in the Minoan pumice allows to refine the date of the Minoan eruption on Santorini to the 17th century B.C.
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Raung volcano photos: One of the largest and most active volcanoes in East Java, rarely-visited and relatively unknown Raung became (in)famous during its recent eruption in 2015 when its frequent ash plumes forced the repeated closure of Bali's airport.
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Intraplate volcanism: A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.
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