Lava
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Lava is magma that has been expelled from the interior of a terrestrial planet or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, u
Fresh lava from Fagradalsfjall volcano eruption in Iceland, 2023
Toes of a pāhoehoe advance across a road in Kalapana on the east rift zone of Kīlauea Volcano in Hawaii, United States
Columnar jointing in Giant's Causeway in Northern Ireland
Lava enters the Pacific at the Big Island of Hawaii.
Volcanic eruption
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A volcanic eruption occurs when material is expelled from a volcanic vent or fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous
Some of the eruptive structures formed during volcanic activity (counterclockwise): a Plinian eruption column, Hawaiian pahoehoe flows, and a lava arc from a Strombolian eruption
Ropey pahoehoe lava from Kilauea, Hawaiʻi
An example of the lava arcs formed during Strombolian activity. This image is of Stromboli itself.
Tavurvur in Papua New Guinea erupting