plateau
A region that lies below the level of the surrounding land is called a depression or basin. This area typically collects water and can be characterized by lower elevation compared to its surroundings.
It is called a plateau.
A raised strip of land is called a ridge. It is a long, narrow elevation of land that is higher than the surrounding area.
Plateau
A gently raised area higher than surrounding land is typically referred to as a hill. It is characterized by its gradual slope and lower elevation compared to mountains. Hills may offer scenic views or be used for recreational activities such as hiking.
The darkened area of a sunspot is called the umbra. It is the central region of a sunspot where the magnetic field is strongest, causing the area to appear darker compared to the surrounding photosphere of the Sun.
A broad lowland is a large, flat area of land that is situated at a relatively low elevation compared to surrounding areas. These lowlands are often characterized by fertile soil and are found in various regions around the world.
An area where ground water reaches the surface, usually as a spring, is called an oasis. The water allows more plants to flourish there as compared to the surrounding desert.
The area surrounding a city is typically referred to as the city's outskirts or suburbs.
The area is called the Black Hills.
A depression in the ground surrounded by higher land is called a basin. It typically has a circular or oval shape and may collect water or sediment due to its lower elevation compared to the surrounding area.
the measure of change in elevation in a certain distance is called gradient