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The top of a volcano may be a peak, lava dome, vent, crater, or caldera (empty magma chamber), depending on the state of the volcano. The top of any mountain can be called its summit.
A concave hollow is a crater. In a dormant volcano, the empty magma pit is called a caldera.
Three parts of a volcano are the base, the flank, and the vent. Some additional parts include the sill, the crater, the summit, and the cone.
Volcanic crater.
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The top of a volcano may be a peak, lava dome, vent, crater, or caldera (empty magma chamber), depending on the state of the volcano. The top of any mountain can be called its summit.
A concave hollow is a crater. In a dormant volcano, the empty magma pit is called a caldera.
Three parts of a volcano are the base, the flank, and the vent. Some additional parts include the sill, the crater, the summit, and the cone.
Volcanic crater.
A volcanic vent. There may also be a crater (a concave depression or pit). This is known as a volcanic vent. It may sit at the base of a volcanic crater.
crater or vent
A crater
A volcanic vent. There may also be a crater (a concave depression or pit). This is known as a volcanic vent. It may sit at the base of a volcanic crater.
A vent tube connects the magma chamber to the vent or crater of the volcano, hence allowing the magma to be released from the volcano and become lava.
The central depression is called a crater, or more technically a "caldera."