Diamond Head

Volcanic in Honolulu, Hawaii, United States

Diamond Head
Aire Volador

About

What It Is

Diamond Head, known in Hawaiian as Lēʻahi, is a volcanic tuff cone on the island of Oʻahu, Hawaii, situated near the eastern edge of Waikiki's coastline [1][3]. The Hawaiian name most likely derives from the words for promontory and tuna, referencing the ridgeline's resemblance to a tuna's dorsal fin, while British sailors in the 19th century named it after calcite crystals on the adjacent beach that they mistook for diamonds [3]. The crater and its surrounding slopes, covering more than 475 acres, are protected as a State Monument and have been designated a U.S. National Natural Landmark since 1968 [1][3]. The crater was formed roughly 300,000 to 500,000 years ago during a single explosive eruption and is part of the broader Honolulu Volcanic Series [1][3].

Activities & Experiences

The primary visitor activity is the Diamond Head Summit Trail, a 0.8-mile route from the crater floor to the summit that gains 560 feet in elevation [1][3]. The trail passes through a lighted 225-foot tunnel and up steep stairs to reach the Fire Control Station completed in 1911, where bunkers used to direct coastal artillery fire are still visible [1]. From the summit, visitors take in panoramic views stretching from Koko Head to the Waianae coast, and during winter months humpback whales may be visible offshore [1]. An interpretive kiosk on the crater floor houses exhibits on the site's history and natural resources, and a self-guided audio tour covering history, culture, geology, and wildlife is available [1].

Practical Access

The monument is open daily from 6:00 am to 6:00 pm, with the last reservation slot at 4:00 pm and the last entry for that slot at 4:30 pm; the gates close at 6:00 pm and all visitors must exit by then [1]. The site is closed on Christmas and New Year's Day [1]. Entry is free for Hawaii residents with a valid Hawaii ID or driver's license; non-residents pay USD 5 per person, and children aged 3 and under enter free [1]. Non-resident vehicle parking costs USD 10 per non-commercial vehicle, and reservations for both entry and parking are required for non-residents (as of May 12, 2022) [1]. The crater floor facilities are fully accessible to visitors with disabilities, but the summit trail is not ADA accessible due to steep and uneven terrain, including an especially steep staircase covering the final one-tenth of a mile [1]. Plan for 1.5 to 2 hours to complete the hike; sturdy footwear, water, a hat, and sunscreen are recommended [1].

Restrictions

Pets are not permitted anywhere in the park, with the exception of service animals [1]. Non-residents must hold advance reservations for both entry and parking (as of May 12, 2022); walk-up access without a reservation is not available to non-residents [1]. Payment at the entrance is by credit card only [1]. A portion of the crater is closed to the public and operates as a platform for U.S. government antennas [3].

What Makes It Distinctive

Diamond Head is Hawaii's most recognized landmark and one of the most heavily visited destinations in the state, drawing more than 3,000 visitors per day [1]. It combines geological significance, intact early-20th-century military infrastructure, and sweeping coastal views in a single compact hike accessible from central Waikiki [1][3]. Its dual status as both a State Monument and a U.S. National Natural Landmark, along with its deep presence in Hawaiian cultural identity and global popular culture, sets it apart from other volcanic features on Oahu [3].

Sources

  1. Diamond Head State Monument – Division of State Parks
  2. Department of Land and Natural Resources – Making Hawai`i a Great Place to Live!
  3. Diamond Head, Hawaii

Access & fees

Things to do

Before you go

Amenities

Best time to visit

Events & seasons

Features

Nearby

Good to know

Catalog identifier: AVIA-AX2T-WXEB6