Ross Pond State Park This 314-acre park features an easy to moderate blue-blazed loop trail spanning 2.5 miles through woodlands, streams, and wetlands. The trail hugs the western edge of the pond and climbs to the Ross Cliffs overlook with views of Ross Pond, spanning Killingly all the way to Rhode Island. A blue-blazed trail connects Ross Pond State Park to the adjacent Old Furnace State Park, expanding trail options in the area. The state park offers hiking, hunting, fishing, and a boat launch. There is no parking fee at this park.