Erving State Forest, located just north of the Millers River in the towns of Erving, Warwick, and Orange, Massachusetts, covers a central area roughly 2½ by 2½ miles wide in central Massachusetts north of the Quabbin Reservoir and also includes several nearby satellite property fragments. The property is largely wooded and hilly with an extensive network of park roads and hiking trails, the majority of which were created by the Civilian Conservation Corps.