Waterfall is a city located on Christmas Island. While the name shares a common geographical definition—referring to any point where water flows over a vertical drop or steep series of drops in a river, stream, or from melting ice—it serves as a specific populated location within this territory.
The geological formation of waterfalls typically occurs when a river courses over resistant bedrock onto softer rock, which erodes more quickly to create an increasingly high fall. These features are frequently studied for their ecological impact on the various species that inhabit the surrounding environments.