a valley
A basin
A depression on the surface of the Earth created by groundwater is known as a cone of depression.
A mountain is a natural, large elevation in the Earths surface. A basin is a depression in the Earths surface containing water.
A hollow or depression in the earth's surface is a basin. A basin is usually shaped like a bowl, with the sides higher than the bottom. Some are filled with water, some are empty.
a valley
A basin
a valley, a canyon, a hole, a gulch, a hollow, a gully
a very large depression on the earths surface, like trough, which contains mounds of sedimentary and volcanic rocks.
Botches
Deposition by erosion , could fill a depression , the same erosion creates depressions.
100
70% or 80% of water covers the earths surface