A pumped-storage hydroelectric plant and reservoir occupies the top of the mountain west of the summit.

Engineering studies began in October 1964, with early site preparation starting three years later.

FirstLight also offers camping at nearby Barton Cove, environmental programs, and boat tours of the Connecticut River.

Northfield Mountains' geologic story can begin in the late pre-Cambrian Period.

The ancient pre-Cambrian rocks are more than 600 million years old and are found only in the Western Berkshires of Massachusetts and in the Green Mountains of Vermont.