The Taconic Mountains or Taconic Range are a physiographic section of the larger New England province and part of the Appalachian Mountains, running along the eastern border of New York State and adjacent New England from northwest Connecticut to western Massachusetts, north to central western Vermont. The range includes notable summits such as Mount Equinox and Mount Greylock, the highest point in Massachusetts. Currently local residents, along with the prominent 19th century geologist, T.