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
Geographical renaming Geographical renaming Geographical renaming is the changing of the name of a geographical feature or area. This can range from the change of a street name to a change to the name of a country. Some names are changed locally but the new names are not recognised by other countries, especially when there is a difference in language. Other names may not be officially recognised but remain in common use. Many places have different names in different languages, and a change of language in official or general use has often resulted in what is arguably a change of name. There