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About this peak
Hawai'i's most iconic crater — a 300,000-year-old tuff cone above Waikīkī, climbed by thousands daily through tunnels and a spiral staircase to old military lookouts.
Peak facts
Best season
Year-round; go early for parking-slot times
Nearest town
Honolulu
Getting there
Online reservations required for the paved 2.9 km summit trail from inside the crater; closed Mondays and Tuesdays.
Geology
Ash and tuff ring from a short-lived phreatomagmatic eruption of the Honolulu Volcanics.
Summit photo gallery
1 shot from this peak — review photos and views captured with the Peak Lens camera. Tap the share icon on any photo to post it to your social channels.
Plan your hike or climb
Proceed with caution
Hiking and climbing in the mountains are dangerous activities that claim lives every year. Peak information here — routes, trip reports, and GPS tracks included — comes from public sources and community posts, so it can be incomplete, out of date, or simply wrong, and it is never a substitute for experience, skill, and proper gear. Check current conditions, share a lifeline with someone at home, and know your limits. You are responsible for your own safety in the mountains.
Diamond Head Beach Coastal Walk
EasyA flat coastal walk from Waikīkī along the crater's south flank to Diamond Head Beach Park.
Diamond Head Summit Trail
EasyReservations-only walk through the crater floor, tunnels and a spiral staircase to the old fire-control lookout above Waikīkī.