Sacred Falls State Park, traditionally known as Kaliuwaʻa, lies in Hauʻula on Oʻahu’s North Shore and includes Kaluanui Gulch and its waterfall, a dramatic landscape also revered in Koʻolauloa as a wahi pana. Hawaiian tradition links the valley to Kamapuaʻa, who escaped chief ʻOlopana by leading his people there and transforming himself so they could climb to safety. In modern times, the site became known for deadly instability. On May 9, 1999, a rockfall near the falls killed eight hikers and injured at least 30 others. Because the steep, narrow, heavily weathered volcanic terrain made rockfall control impractical, the park was permanently closed.