Lava spine

Spinesvolcanic spinevolcanic spires
A lava spine is a vertically growing monolith of viscous lava that is slowly forced from a volcanic vent, such as those growing on a lava dome (Bates & Jackson, 1987).wikipedia
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Lava dome

lava domesdomecryptodome
A lava spine is a vertically growing monolith of viscous lava that is slowly forced from a volcanic vent, such as those growing on a lava dome (Bates & Jackson, 1987).
Spines and lava flows are common extrusive products of lava domes.

Volcano

volcanicvolcanoesvolcanic igneous activity
A lava spine is a vertically growing monolith of viscous lava that is slowly forced from a volcanic vent, such as those growing on a lava dome (Bates & Jackson, 1987).

Diatreme

maar-diatreme volcanodiatremesvolcanic pipes
A diatreme may also be referred to as a lava spine, such as the example of Mount Pelee in 1902.

Hoodoo Mountain

The mountain gets its name from the needle-like lava spines or hoodoos that reach heights of 150 m, which give the volcano a strange appearance.

Tibesti Mountains

TibestiTibesti MassifToubouland
The plateaus are strewn with volcanic spires and are separated by canyons that have been formed by the irregular flow of wadis.

Mount Cayley volcanic field

This acts like a volcanic plug and composes the lava spines that currently form pinnacles on Cayley's rugged summit.

Mount Fee

The present day edifice of Mount Fee contains several lava spines that reach heights of 100 m to 150 m above the main ridge.

Types of volcanic eruptions

volcanic eruptioneruptionvolcanic eruptions
An early sign of a coming eruption is the growth of a so-called Peléan or lava spine, a bulge in the volcano's summit preempting its total collapse.

Goat Rocks

Once eruptions ceased, the ongoing forces of glacial erosion, as well as hydrothermal alteration of the volcano's interior, stripped away layers of volcanic ash deposits and lava flows, uncovering the rocky lava spines where magma had cooled and hardened within the conduits of the volcano.

Garibaldi Volcanic Belt

GaribaldiCascade Volcanic ArcGaribaldi Volcanic Arc
This acts like a volcanic plug and composes the lava spines that currently form pinnacles on Cayley's rugged summit.

Canadian Cascade Arc

Canadian Cascade Magmatic Arc
These form the ribs of 60 to 180 m high lava spines, the tallest being The Castle, which contains horizontal and radiating columnar joints.

Santa María (volcano)

Santa MariaSantiaguitoSanta María
The early (pre-1990) exogenous volcanism has consisted of lava spines and lava flows.

2004–08 volcanic activity of Mount St. Helens

2004-2008 volcanic activityactiverenewed activity
Included in the new dome was a feature dubbed the "Whaleback" (named such because of its close resemblance to the back of a whale), which was a lava spine, a long shaft of solidified magma being extruded by pressure of magma underneath it.