Plunge pool softer or fractured rock has been eroded back to a knickpoint, water continues to bombard its base. Because this rock is often less resistant than overlying strata, the water from the higher elevation continues eroding downward until an equilibrium is achieved. A somewhat similar bowl-shaped feature developed by flowing water, as opposed to falling water, is known as a scour hole. These occur both naturally and as a result of bridge building. 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
Chute (racecourse) turn joins to the backstretch would be 5 furlongs (1,106 m) from the finish. In order to hold races at the distance of – the most common distance of American thoroughbred horse races – the backstretch is extended by an extra 1/16 of a mile (101 m). This is the most common situation where a chute is pressed into service. At some tracks, this chute is longer, so that races can be run at as well. Often a second chute will be placed at the top of the stretch, extending the length of the straightaway from the top of the