Kinney Point State Park is a 67-acre marine state park at the south end of Marrowstone Island in Washington. It has 683 feet of shoreline and is unusual among state parks because it has no upland access. As part of the Cascadia Marine Trail, its campsites are reserved for boaters who arrive by non-motorized means. The park’s shoreline setting shapes its main uses, with fishing, clam digging, and crabbing among the principal activities.