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) The chute was modeled to give the appearance of a European-type course. Grass sprints at about 6 furlongs (actual distance 64 feet less than same), as well as the marathon distance of about 1 miles (actual distance 262 feet less than same, and generally used only once a year for the San Juan Capistrano Invitational race), utilize the full length of the El Camino Real Chute. Turf races at 1 miles and 1 miles also start from various points within the chute, and races at 1 miles (a very common turf distance at American tracks) start directly on the dirt