Plunge pool Plunge pool A plunge pool (or plunge basin or waterfall lake) is a deep depression in a stream bed at the base of a waterfall or shut-in. It is created by the erosional forces of cascading water on the rocks at formation's base where the water impacts. The term may refer to the water occupying the depression, or the depression itself. Plunge pools are formed by the natural force of falling water, such as at a waterfall or cascade; they also result from man-made structures such as some spillway designs. Plunge pools are often very deep, generally related to the
Geographical feature Geographical feature Geographical features are naturally-created features of the Earth. Natural geographical features consist of landforms and ecosystems. For example, terrain types, physical factors of the environment) are natural geographical features. Conversely, human settlements or other engineered forms are considered types of artificial There are two different terms to describe habitats: ecosystem and biome. An ecosystem is a community of organisms interacting with its environment. In contrast, biomes occupy large areas of the globe and often encompass many different kinds of geographical features, including mountain ranges. Biotic diversity within an ecosystem is the variability among living organisms from all sources,