‪Diamond Head State Monument Verified listing

Diamond Head State Monument, located on the island of Oʻahu in Hawaii, is one of the most iconic natural landmarks in the state. Known in Hawaiian as Lēʻahi, this volcanic tuff cone was formed approximately 300,000 years ago during a single explosive eruption. The crater spans about 350 acres and is part of the Honolulu Volcanic Series. Its strategic location and panoramic views made it a vital military lookout, and remnants of its military past, including bunkers and an observation platform, still remain at the summit.

The highlight of visiting Diamond Head is the popular hiking trail that leads from the crater floor to the summit, offering breathtaking views of Waikīkī and the Pacific Ocean. Though only about 0.8 miles one way, the trail is steep and includes switchbacks, stairs, and tunnels, making it a moderately challenging climb. At the top, hikers are rewarded with expansive vistas that make the effort well worth it. Interpretive signs along the trail provide insight into the crater’s geology and history, enhancing the educational experience.

Managed by the Hawaiʻi Department of Land and Natural Resources, the monument is a protected area that attracts over a million visitors each year. In recent years, the state has introduced timed entry reservations to manage the large crowds and protect the environment. Whether you're drawn by the natural beauty, the historical significance, or the physical challenge, Diamond Head offers a unique and memorable experience for anyone exploring the Hawaiian Islands.