The history of the Black Forest area is closely paralleled by that of a larger area traditionally known as the "Pineries". The area originally extended from Divide, Colorado (now known as the town of Monument, Colorado), through the present planning area and east along the Platte-Arkansas Divide to a point where the Ponderosa Pines thinned out. Altogether the Pineries encompassed a 1,000 square mile area. Although the origin of the name is not clear, that portion of the Pineries north of Colorado Springs became known as the "Black Forest" by around the turn of the century.