Taconic Mountains
The Taconic Mountains are part of the Appalachian Mountains, running along the eastern border of New York State, United States. The range also extends into Massachusetts. The highest peak is Mount Equinox, with an elevation of 3,816 feet (1163 m). Their Native American name was once transliterated as the Taghkanic Mountains.
The Taconic mountain range was formed from the collision of the North American Plate into a volcanic island arc, similar to modern day Japan, during the late Ordovician Period, around 440 million years ago. A more complete discussion is at Taconic orogeny.