Niagara Falling: A Pictorial Essay of the City of Niagara Falls in New York
A limen is literally a threshold, separating outside from inside or marking the transition between two rooms. Many things such as persons, places, and times are "liminal" in nature. They are those things that are ambiguous, shifting, and indeterminate. Liminal places, for instance, are located at edges or interstices. Some places are visibly liminal. The plains give way to foothills, the threshold to the mountains. A river or sea might be the threshold between political states. Crossroads are places to shift direction. An airport is a threshold to a destination.
Cozort, Dan. "Liminality: Niagara Falls." In Niagara Falling: A Pictorial Essay of the City of Niagara Falls in New York, by David Hodge and Hi-Jin Kang Hodge,160-63. Half Moon Bay, California: Hodge Arts, 2013.