Mount Greylock is the highest point in Massachusetts at 3,489 feet. Located in northwest region of the state, it is part of the Taconic Mountains, a geologically distinct range from the nearby Berkshires and Green Mountains. Expansive views and a small area of sub-alpine forest characterize its upper reaches. A seasonal automobile road crosses t…Mount Greylock is the highest point in Massachusetts at 3,489 feet. Located in northwest region of the state, it is part of the Taconic Mountains, a geologically distinct range from the nearby Berkshires and Green Mountains. Expansive views and a small area of sub-alpine forest characterize its upper reaches. A seasonal automobile road crosses the summit area near three structures from the 1930s; these together constitute a small National Historic District. Various hiking paths including the Appalachian Trail traverse the area, which is part of the larger Mount Greylock State Reservation.