The Westfield River, which runs at the outermost perimeter and most of the park's terrain was created by glaciers (the Hitchcock glacial lake/Laurentide ice sheet) as they retreated 15–20,000 years ago.
The Westfield River, which flows along the outermost boundary and much of the park's landscape was formed by glaciers (the Hitchcock glacial lake/Laurentide ice sheet) as they retreated 15–20,000 years ago.