Montezuma Well is a natural limestone sinkhole located near Rimrock in central Arizona. Formed by the collapse of an underground cavern, the well is fed by a constant spring and drains into Beaver Creek. The site contains prehistoric cliff dwellings built by the Sinagua people and is administered as part of Montezuma Castle National Monument. It is known for its striking turquoise waters, unique ecosystem, and long history of Indigenous habitation. - AsNotedIn