Dona Juana volcano, Colombia
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Doña Juana volcano, Colombia
The forested Dona Juana stratovolcano contains two calderas, breached to the NE and SW.
The summit of the andesitic-dacitic volcano is comprised of a series of post-caldera lava domes.
The older caldera, open to the NE, formed during the mid-Holocene, accompanied by voluminous pyroclastic flows.
The younger caldera contains the active central cone.
The only historical activity of Dona Juana took place during a long-term eruption from 1897-1906, when growth of a summit lava dome was accompanied by major pyroclastic flows.
PHOTO SOURCE: Wikimedia Commons
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