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 ponds, parks and woods, mills, manor houses, moats, and churches may be considered part of a settlement. Engineered geographic features include highways, bridges, airports, railroads, buildings, dams, and reservoirs, and are part of the anthroposphere because they are man-made geographic features. Cartographic features are types of abstract geographical features, which appear on maps but not on the planet itself, even though they are located on the planet. For example, the Equator is shown on maps of the Earth, but it does not physically exist. It is a theoretical line used for reference, navigation, and measurement. Geographical feature Geographical features are