Joseph Allen Skinner State Park is a state-owned, public recreation area located in the towns of Hadley and South Hadley in the Connecticut River Valley of western Massachusetts. The state park surrounds Mount Holyoke, the westernmost peak of the Mount Holyoke Range. At the summit is the historic Prospect House, an old hotel first opened in 1851. The park is managed by the Massachusetts Department of Conservation and Recreation. (Ref: https://en.wikipedia.org/wiki/J._A._Skinner_State_Park)