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
Shoot the Chute board. The oldest ride of this type still in operation is the Boat Chute, constructed in 1926 and 1927 located at Lake Winnepesaukah Amusement Park in Chattanooga Tennessee. An operating modern reproduction of the Luna Park shoot the chute ride of the early 20th century, The Pittsburg Plunge, is currently in operation at Kennywood amusement park in Pennsylvania. The Shoot the Chute concept has evolved over time in the amusement park industry. All modern Shoot the Chute rides today feature a guide track after the descent down the chute into the pool of water that allows the boats to return