A volcano shaft is called the vent, which lets the magma pour out.
The arenal volcano is a cindercone volcano not a composite.
An adit. In North America, the horizontal or sloped entrance to a mine is called a "Portal". Portal more specifically refers to the portion of the shaft visible from the outside of the mine. In some areas, the Portal portion of a horizontal shaft is called the "Drift Mouth" or "Drift Portal" as this shaft leads into a "Drift Mine". With a vertical shaft, that portion would be called a "Collar".
a shield volcano
When a destructive boundary of two tectonic plates occurs the oceanic crust sinks underneath the continental crust as it is more dense, the oceanic crust then melts in the subduction zone and becomes magma in the mantle, this increases the pressure in the mantle and causes the magma to shoot up the volcano shaft and burst out of the top, this is an eruption
taal volcano is ACTIVE
Buy the pre-dug shaft and float to the bottom. Or, just dig straight down.
The arenal volcano is a cindercone volcano not a composite.
Axle shaft, steering shaft, drive shaft, distributor shaft
A Strato volcano or a composite volcano.
No. It is a composite volcano.
An adit. In North America, the horizontal or sloped entrance to a mine is called a "Portal". Portal more specifically refers to the portion of the shaft visible from the outside of the mine. In some areas, the Portal portion of a horizontal shaft is called the "Drift Mouth" or "Drift Portal" as this shaft leads into a "Drift Mine". With a vertical shaft, that portion would be called a "Collar".
a shield volcano
When a destructive boundary of two tectonic plates occurs the oceanic crust sinks underneath the continental crust as it is more dense, the oceanic crust then melts in the subduction zone and becomes magma in the mantle, this increases the pressure in the mantle and causes the magma to shoot up the volcano shaft and burst out of the top, this is an eruption
A regular shaft has regular flex.
Cleveland volcano is in Alaska & is a Stratovolcano (composite volcano)
taal volcano is ACTIVE
Cinder Cone volcano, Shield Volcano and Composite Volcano