A volcanic vent is that spot in the Earth's crust where gases, molten rock, lava and rocks erupt. Volcanic vents can be at the top of some of the largest volcanoes on Earth, like Hawaii's Mauna Kea, or they can be openings in the Earth's crust down at the bottom of the ocean.

What is the difference between a volcano and a vent?

A volcano is connected to the magma chamber under the surface of Earth. This chamber has molten rocks which flow out from the volcano. The actual outflow of the lava takes place from one or more openings, known as the vents. There is usually a primary vent and many smaller vents.

What is the meaning of vent in the volcano?

Any opening at the Earth's surface through which magma erupts or volcanic gases are emitted.