Calderas, like Crater Lake, Oregan, USA.
The basin-shaped crater at the top of a volcano is called a caldera. It is typically formed after a volcanic eruption causes the volcano to collapse inward, creating a large depression. Calderas can range in size from a few kilometers to tens of kilometers in diameter.
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.
Surrounding the Pacific Ocean basin is what is called the Ring of Fire...
When a larger volcano collapses in on itself, it typically forms a caldera, which is a large depression resulting from the explosive eruption and the subsequent emptying of the magma chamber beneath the volcano. The weight of the volcanic structure causes the ground to sink, creating a basin that can fill with water to form lakes. This collapse can also trigger secondary volcanic activity, including the formation of new vents or smaller cones within the caldera. Such events can significantly alter the landscape and affect local ecosystems.
a cave
The basin shaped crater at the top of a mountain is called a caldera. It forms when a volcano collapses into itself after an eruption, creating a large, circular depression.
The basin-shaped crater at the top of a volcano is called a caldera. It is typically formed after a volcanic eruption causes the volcano to collapse inward, creating a large depression. Calderas can range in size from a few kilometers to tens of kilometers in diameter.
It forms a 'caldera'.
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.
Surrounding the Pacific Ocean basin is what is called the Ring of Fire...
When a larger volcano collapses in on itself, it typically forms a caldera, which is a large depression resulting from the explosive eruption and the subsequent emptying of the magma chamber beneath the volcano. The weight of the volcanic structure causes the ground to sink, creating a basin that can fill with water to form lakes. This collapse can also trigger secondary volcanic activity, including the formation of new vents or smaller cones within the caldera. Such events can significantly alter the landscape and affect local ecosystems.
a cave
A caldera.
The Pacific Ring of Fire is not a volcano itself but rather a horseshoe-shaped area in the Pacific Ocean basin that is known for its high level of tectonic activity, including earthquakes and volcanic eruptions. The Ring of Fire is home to about 75% of the world's active and dormant volcanoes.
Because Big Basin is really big. Why else?
The boundary of the drainage basin is called a drainage divide. Sometimes drainage basin is called catchment area referring to an area where water flows into a stream or a number of streams. In North America drainage basin is also called Watershed.
Basin Or Watershed