Diamond Head State Monument
State Monument · Honolulu, Hawaii
A volcanic tuff cone on the south-east corner of Oahu whose silhouette closes the view from Waikiki, and the most recognisable landform in the state. Hawaiians know it as Lēʻahi, most likely from lae and ʻahi - the ridgeline resembles the dorsal fin of a tuna. Its English name came from nineteenth-century British sailors who found calcite crystals on the beach below and thought they had found diamonds. A trail built for coastal defence climbs from the crater floor to the rim.
Diamond Head Road, Honolulu, Hawaii, United States
⚠ OUT-OF-STATE VISITORS MUST RESERVE ENTRY AND PARKING IN ADVANCE ONLINE - this is the single thing that turns people away at the gate, and Hawaii residents with ID are exempt. Entry and parking are booked separately and in timed slots. Generally open 6am to 6pm with the last trail entry around 4pm and everyone off the trail by closing. A per-person entry fee and a separate per-vehicle parking fee apply.
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