Cliff Mountain is a mountain located in Essex County, New York.
The mountain is part of the Marcy Group of the Great Range of the Adirondack Mountains.
Cliff is flanked to the southeast by Mount Redfield.
Cliff Mountain stands within the watershed of the Opalescent River, a tributary of the Hudson River, which in turn drains into New York Bay.
Address 12943, United States
Coordinates 44°6'11.228" N -73°58'31.685" E