Parasitic cone

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Science and technology

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What Wikipedia says

A parasitic cone (also adventive cone, satellite cone, satellitic cone or lateral cone) is the cone-shaped accumulation of volcanic material not part of the central vent of a volcano. It forms from eruptions from fractures on the flank of the volcano. These fractures occur because the flank of the volcano is unstable.

Excerpt from the Wikipedia article “Parasitic cone”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ji-Elle, CC BY-SA 3.0, via Wikimedia Commons.