It would have to be a caldera. A caldera is a depression in the ground, so it is logical that one would contain a lake (and some do).
A volcanic neck is a pillar or mountain of rock that solidified inside a volcano, and so could not form a lake.
It is called a crater. The area around the sides is the crater rim. If the volcano has collapsed into an empty magma chamber, this is called a caldera, and can exist for both tall or wide volcanoes.
When a magma chamber partially empties, the remaining magma can solidify and form igneous rocks. This can result in the formation of a volcanic neck, which is a vertical column of solidified magma that remains after the surrounding rock has eroded away. Alternatively, if the magma is expelled through volcanic eruptions, it can form volcanic deposits such as lava flows and pyroclastic materials.
volcanic neck
volcanic neck
a volcanic neck
In cases where a volcanic mountain erupts, leaving behind part of its neck, to form a kind of depression or hollowed remnant called a Crater. When water gets into such cavity and becomes traped and stagnant it leads to a "Cratic Lake" mostly known as a "Caldera".
It is called a crater. The area around the sides is the crater rim. If the volcano has collapsed into an empty magma chamber, this is called a caldera, and can exist for both tall or wide volcanoes.
there's diamonds and granite in a volcanic neck
Volcanic neck
Volcanic Neck The surrounding rock weathers more easily than the magma in the pipe. The resultant structure will first appear as a low flat protrusion which is slightly elevated from its surroundings. With additional weathering of the surrounding rock, the hardened magma may appear as a tower with possible basaltic columnar structure known as a volcanic plug or volcanic neck.
When a magma chamber partially empties, the remaining magma can solidify and form igneous rocks. This can result in the formation of a volcanic neck, which is a vertical column of solidified magma that remains after the surrounding rock has eroded away. Alternatively, if the magma is expelled through volcanic eruptions, it can form volcanic deposits such as lava flows and pyroclastic materials.
volcanic neck
Volcanic neck
volcanic neck
Volcanic neck (:
a volcanic neck
A volcanic neck forms when the magma inside a volcano turns into rock and the outside of a volcano wears away, leaving the spiky-shaped rock magma.