Four miles before Hana, off the Hana Highway, is this beach park, which takes its name from the legend of the Waianapanapa Cave, where Chief Kaakea, a jealous and cruel man, suspected his wife, Popoalaea, of having an affair. Popoalaea left her husband and hid herself in a chamber of the Waianapanapa Cave. She and her attendant ventured out only at night for food. Nevertheless, a few days later, Kaakea was passing by the area and saw the shadow of the servant. Knowing he had found his wife’s hiding place, Kaakea entered the cave and killed her. During certain times of the year, the water in the tide pool turns red, commemorating Popoalaea’s death. (Scientists claim, less imaginatively, that the water turns red due to the presence of small red shrimp.) Waianapanapa State Park’s 120 acres contain 12 cabins, a caretaker’s residence, a beach park, picnic tables, barbecue grills, restrooms, showers, a parking lot, a shoreline hiking trail, and a black-sand beach (actually, small black pebbles). This is a wonderful area for shoreline hikes (bring insect repellent—the mosquitoes are plentiful) and picnicking. Swimming is generally unsafe, though, due to strong waves and rip currents. Because Waianapanapa is crowded on weekends with local residents and their families, as well as tourists, weekdays are generally a better bet.

Near Hana on the Hana Highway.