Nickerson State Park is a state-owned, public recreation area of more than 1,900 acres (770 ha) located on Cape Cod in Brewster, Massachusetts. The state park's sandy soil and scrub pines surround many kettle ponds which are dependent on groundwater and precipitation. The largest of these are Cliff Pond (the largest at 0.7 miles (1.1 km) across), Flax Pond, Little Cliff Pond, and Higgins Pond. Ruth Pond, Keeler's Pond, Eel Pond and Triangle Pond provide additional water habitats.