The steep walled depression surrounding a volcano vent is called the crater. In dormant volcanos, these may fill with water and become crater lakes.
It is called a crater
A shield volcano.
The "dust" from a volcano, more properly called ash, consists of tiny pieces of rock and glass blasted out when a volcano erupts explosively.
concrtyeu
I believe the answer you may be looking for is either Lava or a Volcano
The central depression is called a crater, or more technically a "caldera."
A bowl-shaped depression that forms around the vent of a volcano is a crater. These craters can be formed by the explosion of volcanic material or the collapse of the volcanic cone following an eruption.
A volcano that looks like a depression in the ground is called a caldera. It forms when the summit of a volcano collapses following a massive eruption, creating a large crater-like depression. Calderas can range in size from a few kilometers to tens of kilometers in diameter.
Caldera.
The large hole at the top of a volcano is called a "crater." It is formed when explosions or collapses create a depression at the summit of the volcano.
You are possibly looking for Caldera.
Volcanic crater.
A saucer-shaped depression at the mouth of a volcano is called a volcanic caldera. Calderas are formed when a volcano collapses into the emptied magma chamber below, creating a large, basin-like crater.
Any place the volcano opens up is called a vent since it allows for the release of built up heat and gas. The main summit of the volcano is usually called the crater but I'm guessing there is probably something more technical that a geologist would call it. Hopefully this helps.
The mouth of a volcano is called the "vent." This is the opening through which volcanic materials, such as lava, ash, and gases, are expelled during an eruption. Vents can vary in size and may occur at the summit or along the sides of the volcano. In some cases, the vent can lead to a crater, which is a bowl-shaped depression formed around the vent.
The steep walled depression surrounding a volcano vent is called the crater. In dormant volcanos, these may fill with water and become crater lakes.
If you look at the volcano side ways that little curve on top is called a cradle i think