Just north of Wahiawa is the area known as Kukaniloko, which marks a group of royal birthstones where Hawaiian queens gave birth to generations of royalty. The stones date from the 12th century. Legend held that if a woman lay properly against the stones while giving birth, her child would be blessed by the gods.
Indeed, many of O'ahu's great chiefs were born at this site.These stones are one of only two documented birthstone sites in Hawaii (the other is on Kaua'i). Many of the petroglyphs on the stones are of recent origin, but the eroded circular patterns are original.
To get to the site from town, go three-quarters of a mile north on Kamehameha Hwy from its intersection with California Ave. Turn left onto the red dirt road directly opposite Whitmore Ave. The stones, marked with a state monument sign, are a quarter of a mile down the road, through a pineapple field, among a stand of eucalyptus and coconut trees. Park shortly after the turnoff; don't leave valuables unattended inside your vehicle.