Understanding Valleys and Volcanic Craters: Formation & Characteristics

Valleys are often found between mountains or hills. When two mountains or hills are close together, the space between them is often called a valley. Valleys can be wide and flat, or they can be narrow and steep-sided. Some valleys are formed by the action of rivers or glaciers, while others are formed by tectonic forces.

Volcanic craters

Volcanic craters are often found at the top of volcanoes. When a volcano erupts, it can leave a large depression in the ground, which is called a crater. Craters can be wide and shallow, or they can be narrow and deep. Some craters are filled with water, while others are not.

Calderas

Calderas are large, collapsed volcanic craters. When a volcano collapses, it can leave a large depression in the ground, which is called a caldera. Calderas can be very large, and they can sometimes be several kilometers in diameter. Some calderas are filled with water, while others are not.

Rift valleys

Rift valleys are formed by the separation of two tectonic plates. When two plates move apart, they can create a deep, narrow valley. Rift valleys can be very long, and they can sometimes be several thousand kilometers in length. Some rift valleys are filled with water, while others are not.

Glacial valleys

Glacial valleys are formed by the action of glaciers. When glaciers move, they can erode the land and create deep, U-shaped valleys. Glacial valleys can be very wide and deep, and they can sometimes be several kilometers long. Some glacial valleys are filled with water, while others are not.